CBF Customer Simulation Period May and June 2021 - Guideline - Eurex

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CBF Customer Simulation Period May and June 2021 - Guideline - Eurex
CBF
Customer Simulation Period
May and June 2021
Guideline
CBF
Customer Simulation May and June 2021
Guideline
April 2021
Document number: 7342
This document is the property of Clearstream Banking AG, Frankfurt (“Clearstream Banking” or “CBF”) and
May only be changed with prior written consent obtained from Clearstream Banking. The information in this
document is subject to change without notice and does not represent any obligation on the part of
Clearstream Banking, a subsidiary or other affiliate of Clearstream International S.A.
© Copyright Clearstream Banking AG, Frankfurt (2021). All rights reserved.
Clearstream Banking AG, Frankfurt, is a Deutsche Börse Group company.

   Clearstream Banking Frankfurt                                                              April 2021
   Customer Simulation Period May and June 2021                                                        2
Content

1. Introduction ...................................................................................................................... 4
2. Scope of CBF Customer Simulation in May and June 2021 ............................................... 5
3. Preparation Guided Customer Simulation ........................................................................ 6
3.1           Getting ready for customer simulation ......................................................................................... 6
3.2           CASCADE Online functionality – Login procedure ........................................................................ 6
3.3           Connectivity requirements - End-to-end testing .......................................................................... 6
3.4           Testing in DCP mode on UTEST ..................................................................................................... 7
3.5           CBF Customer Simulation calendar .............................................................................................. 8
      3.5.1     Test preparation period ............................................................................................................. 8
      3.5.2     Test execution period................................................................................................................. 8
4. Preparation test execution ............................................................................................. 11
4.1           Creation of holdings ..................................................................................................................... 11
4.2           Processing of Stock Exchange transactions (CCP / non-CCP) .................................................. 12
4.3           Limitation for pending instructions ............................................................................................. 13
4.4           Cancellation of pending LION instructions ................................................................................. 13
4.5           Custody services environment settings ...................................................................................... 13
4.6           Decommissioning of the Liquidity Transfer service ................................................................... 15
4.7           Issue Declaration Form ................................................................................................................ 15
5. Execution of test cases ................................................................................................... 16
5.1           Cross-border settlement instructions testing in collaboration with ESES ............................... 16
      5.1.1      Introduction .............................................................................................................................. 16
      5.1.2      Test narrative ........................................................................................................................... 16
5.2           Instruction Management .............................................................................................................. 17
      5.2.1      Additional Cancellation Reason Codes ................................................................................... 18
5.3           Corporate Action Processing (KADI) ........................................................................................... 19
      5.3.1      Introduction .............................................................................................................................. 19
      5.3.2      Test narrative for Corporate Actions ...................................................................................... 19
      5.3.3      Bonus share distribution ......................................................................................................... 19
      5.3.4      Flat bonds interest payment ................................................................................................... 20
      5.3.5      Change of option CAOP in tender and repurchase offer notifications .................................. 21
      5.3.6      Transformations in cash: Usage of hold / release status and modification flag and
                 Reversal of Transaction Price Claim ...................................................................................... 22
      5.3.7      Implementation of SRDII indicator in custody reporting ....................................................... 24
      5.3.8      Market claims for late OTC trades in case of interest payments .......................................... 25
      5.3.9      Extend cancellation and repayment period for non-income events ..................................... 26
5.4           Maintenance Window ................................................................................................................... 27
5.5           Preparation for the common CBF and C7 SCS Test Period ....................................................... 27
6. Contact ............................................................................................................................ 28
Appendix A - CBF processing day in customer simulation .................................................... 29
Appendix B - T2S Deployment Schedule ............................................................................... 35
Appendix C - Setup of domestic OTC settlement instructions ............................................... 36

      Clearstream Banking Frankfurt                                                                                                          April 2021
      Customer Simulation Period May and June 2021                                                                                                    3
1. Introduction
Clearstream Banking Frankfurt (CBF) will offer a Customer Simulation period and test cases dedicated to the
enhancements developed by CBF for the existing CBF functionalities. The functional details about the
envisaged changes are available in the following Announcements:
    •   Information on the production launch in June 2021 – T2S Release 5.0 and CBF services; and
    •   Changes in CBF supporting migration of security clearing to the C7 SCS platform applying Trade
        Date Netting (TDN).
The test case setup by CBF will support the simulation of business cases where specific environment
requirements are necessary for the implementation on 14 June 2021. These consider mainly the processing
between CBF and T2S when the functionality might impact CBF customers acting in ICP and / or DCP mode.
As the Customer Simulation environment (IMS23) is used simultaneously for other Clearstream testing
activities, customers must consider the test requirements, if applicable. In addition, customers can execute
test cases based on their own needs using the IMS23. Customers acting in DCP mode might require
additional testing for their procedures with T2S using the T2S Pre-Production Environment (UTEST).
The participation in the CBF Guided Simulation is optional and not a prerequisite for admission to production
for the launch date of the Releases on 14 June 2021.
In the period from 10 May to 9 June 2021 customers can execute test cases related to the modifications in
the CBF software. Customers who would like to execute dedicated test cases were already asked to register
by latest 23 April 2021. The related registration form is available on the Clearstream website.

   Clearstream Banking Frankfurt                                                                 April 2021
   Customer Simulation Period May and June 2021                                                           4
2. Scope of CBF Customer Simulation in May and June 2021
CBF will offer a guided Customer Simulation from 10 May 2021 to 9 June 2021 with the related software
updates to be introduced by CBF and effective in production on 14 June 2021.
In line with the functional descriptions in the Announcements:
    •   Information on the production launch in June 2021 – T2S Release 5.0 and CBF services; and
    •   Changes in CBF supporting migration of security clearing to the C7 SCS platform applying Trade
        Date Netting (TDN).
Dedicated test cases will be supported. Additionally, customers can execute test cases based on their own
requirements.
CBF announced the decommissioning of CBF cash services. Therefore, neither the CBF Cash Forecast, nor
the related Liquidity Transfer towards the T2S Dedicated Cash Accounts (DCA) will be available any longer. In
preparation to the production launch, CBF Customer Simulation environment (IMS23) has been adapted
accordingly.
Additionally, T2S will introduce various enhancements of the T2S Cash Forecast. Customers using the T2S
Cash Forecast are recommended to create pending OTC instructions against payment with CBF and other
T2S In-CSDs in order to verify their operational procedures. CBF will execute income events supporting the
updated T2S reporting which differentiates between corporate actions and settlement.

   Clearstream Banking Frankfurt                                                                 April 2021
   Customer Simulation Period May and June 2021                                                           5
3. Preparation Guided Customer Simulation

3.1 Getting ready for customer simulation
According to the T2S Service and Transition Plan, T2S will deploy the scope elements for the T2S Release 5.0
on Friday, 9 April 2021. The UTEST phase for T2S Release 5.0 finishes on Wednesday, 26 May 2021. After this
date, however, customers can still execute test cases for the resolution of T2S Problem Tickets (PBI) 1, as the
software will remain unchanged until the next deployment date.
Before the customer simulation can be executed, a downtime from 1 April to 7 May 2021 is scheduled in CBF
Customer Simulation environment (IMS23). During this period, CBF will create additional security holdings
on customer accounts for dedicated test cases, if requested. The registration form is available on the
Clearstream website and must be returned by 23 April 2021.
From 10 May 2021, IMS23 will be available and participating customers can start to execute test cases and
assess possible impacts on their functional and organisational procedures. For this simulation period, the
latest static data for CBF accounts and related connectivity settings requested by customers or other
Clearstream test activities will be available.
For a successful participation in the customer simulation, account and connectivity settings must be
available in the Customer Simulation environment. The static data for CBF accounts and related connectivity
settings from the previous simulation period will be reused in IMS23.
Please contact the Connectivity Support team (connect@clearstream.com), if:
      •    The account and connectivity settings in IMS23 need to be verified.
      •    The customer has not registered for the previous customer simulation and requires a setup in IMS23.
      •    There are particular setup requirements related to the CBF Customer Simulation Period May and
           June 2021. These queries will be routed to the experts of the Customer Readiness team.

3.2 CASCADE Online functionality – Login procedure
Due to increased security regulations, the behaviour of the IMS systems of Deutsche Börse AG was modified
when incorrect login data is entered. This means that after five unsuccessful login attempts due to, for
example, incorrect access data, the user will be blocked. As soon as a login attempt is successful, the
counter is reset and five attempts to log in can be made again.
If all five login attempts fail, the user is blocked and the error message “FY0021I” will be displayed.
To reactivate the user, the customer must contact the administrator at Deutsche Börse
(secuadmin@deutsche-boerse.com). The unblocking cannot be initiated by the Secu-Administrator
nominated in the customer’s institution.
The administrator of Deutsche Börse will inform the customer as soon as the user has been successfully
unlocked. This reactivation takes about 24 hours. After that, the customer can log in with the previous (“old”)
password.

3.3 Connectivity requirements - End-to-end testing
For the message exchange via the SWIFT network, SWIFT requires the use of test BICs as technical sender
and receiver address within its testing environment. The test BIC must be registered with the SWIFT network.
If customers wish to participate via a test BIC for the first time, they should allow some time for the
preparation of the technical setup by SWIFT, RMA key exchange and connectivity tests.
For the message exchange via File Transfer and MQ, the production sender / receiver addresses are to be
used, since only production addresses are allowed in the CBF connection to T2S.

1
    For the list of T2S Problem Tickets, please refer to Announcement D21004.

      Clearstream Banking Frankfurt                                                                  April 2021
      Customer Simulation Period May and June 2021                                                            6
Figure 1 - Message flow during the testing
Technically, CBF customers can send instructions to the CBF Customer Simulation environment (IMS23) by
using the production BIC DAKVDEFFXXX in the header or the CBF test BIC ZYDGDEF0DOM when they instruct
via File Transfer or MQSeries. Via SWIFT, BIC ZYDGDEF0DOM must always be used. If a customer wants to
send an instruction to a test system via File Transfer, the message has to be identified as not being for
production. This is done by a TNG trailer at the end of the instruction: ä5: äTNG: üü
The trailer is used for CBF replies to customers, too. This guarantees that CBF test messages can clearly be
identified, so that the customer can avoid injections into the customer’s production system.
The CBF customer SWIFT addresses used in their messages to CBF is applied by CBF to create the T2S actor
reference for DCP eligible instruction types. If the SWIFT address is a test BIC and linked to an account with
T2S Party BIC, this BIC is used when forwarding the messages to the T2S platform.
In order to set up the required connectivity channels, it is required as in production to request the settings in
advance. The required order forms are available via the Clearstream website.

3.4 Testing in DCP mode on UTEST
Customers acting in DCP mode must use the updated XSD schema defined in SWIFT MyStandards. The XSD
files modified for T2S Release 5.0 have been available for download since the end of January 2021.
According to the T2S description, changes in the XSD are triggered by the following Change Requests related
to security settlement with CBF:
T2S-0615-SYS        Enrich values in “Transaction activity field” of the “Securities Transaction Posting Report
                    (semt.017)”, of the “Securities Transaction Pending Report (semt.018)” and in “Bank
                    Transaction Code” in the “End of Day Account Statement (camt.053)” with all ISO20022
                    codes;
T2S-0630-SYS        Cash Forecast: Skip cash closing days and introduce breakdown per Hold / Released
                    status;
                    Customers have to consider that a Problem Ticket related to the implementation of this
                    change request has been opened. “PBI 213908 - On a closing business day for currencies
                    the “Following Day Cash Forecast” only contains the Settlement Instructions with
                    Intended Settlement Date (ISD) = following settlement day but not those that could not be
                    settled on this closing day. This issue is valid for all T2S connectivity media, that is U2A,
                    A2A, query and report”. T2S plans to resolve this PBI with the introduction of the T2S
                    Release 5.1 in September 2021.
T2S-0688-SYS        Enhanced reporting of cancellation reason codes;
T2S-0690-SYS        Unprune fields in settlement allegements.

   Clearstream Banking Frankfurt                                                                     April 2021
   Customer Simulation Period May and June 2021                                                               7
3.5 CBF Customer Simulation calendar
      3.5.1 Test preparation period
In preparation for the transition of a release, CBF closes the Customer Simulation environment (IMS23) to
internally test the deployment activities, that will be performed during the Release Weekend, step by step.
This closing period is announced by CBF to customers on the website approximately nine months in advance.
For the Customer Simulation period May / June 2021, the IMS23 will not be available for rollout activities
during the period from 1 April to 7 May 2021.
On 31 March 2021, with the end of day procedures, CBF will close the CASCADE Online functionality (HOST /
PC) as well as the automated connectivity channels (SWIFT, MQ and File Transfer (FT)). Customers using:
       •    The CASCADE Online functionality (HOST / PC) cannot access the IMS23.
       •    SWIFT will only receive the SWIFT acknowledgement. The messages are held in the SWIFT network
            and will be not available in the CBF simulation environment. Once CBF opens IMS23, all messages
            will be processed, and the feedback is sent based on the existing message configuration on
            16 April 2021.
       •    MQ messages cannot be transferred to CBF after CBF has closed its gateway. The messages will
            remain on the customer side, that is in their queues. If test activities are planned, customers are
            requested to check their configuration and must ensure sufficient storage capacity by
            16 April 2021.
            For any message sent to the IMS23 while the gateway is closed, the system used to monitor the MQ
            connection will send a warning that the CBF channels and queues are not available during
            downtimes.
       •    FT need to consider that the transmitted files will not be processed – not even after the re-opening –
            in IMS23 and hence no feedback is sent.
On 16 April 2021 after the re-opening of IMS23, SWIFT and MQ messages that are queued will be processed
using the updated software modules. Hence, the feedback can be different to the results currently presented
in production. The feedback might not be processed at customer side if their software is not compatible with
the scope items of the June Release 2021.
As of 12 April 2021, after the deployment of T2S Release 5.0 in UTEST, customers acting in DCP mode can
start testing. These customers need to consider the announced CBF downtime from 1 April to 7 May 2021
while executing test cases. During this period, T2S outbound messages to CBF will not be processed in
IMS23. Hence, if the T2S settlement processing requires a validation by CBF, for such messages the final
settlement cannot be achieved. However, the T2S reporting will be provided upon message subscription and
will contain the information according to the definition of T2S.
            3.5.2 Test execution period
The following CBF Customer Simulation calendar covers the period from 10 May to 11 June 2021. The
schedule shows the:
       •    Availability of the CBF Customer Simulation environment (IMS23);
       •    CBF Focus Days of the dedicated test cases;
       •    “CCP batch days”;
       •    Execution days of an additional T2S Maintenance Window.
According to the T2S Service and Transition Plan, T2S deploys the scope elements for the release on Friday,
9 April 2021. The UTEST phase for T2S Release 5.0 finishes on 26 May 2021. After this date, however,
customers can still execute test cases for the resolution of T2S Problem Tickets (PBI) 2, as the software will
remain unchanged until the next deployment date.

2
    For the list of T2S Problem Tickets, please refer to Announcement D21004

      Clearstream Banking Frankfurt                                                                   April 2021
      Customer Simulation Period May and June 2021                                                             8
The overall test schedule shown below indicates the downtimes already defined for IMS23 or UTEST. If one of
the environments is not available or the testing is limited because of particular measures ensuring a proper
test execution, there might be additional downtimes. CBF will inform customers about such downtimes in
due time by email to their contact nominated in the Customer Simulation Registration Form.
                         Customer Simulation calendar: CBF Release May and June 2021

                                Availability   CCP Simulation
 Test Day                                                       Dedicated test case Focus Day
                                 of IMS23        Calendar
 Monday         10 May 2021        Open        CCP Batch Day    LION Interface is opened
                                                                Focus Day Settlement Allegements
 Tuesday        11 May 2021        Open        CCP Batch Day
                                                                Announcement Day INTR/REDM
                                                                Focus Day T2S Maintenance Window
 Wednesday      12 May 2021        Open                         Announcement and Focus Day related to
                                                                Cancellation of BONU
 Thursday       13 May 2021       Closed                        Public Holiday

 Friday         14 May 2021        Open                         Record Date INTR/REDM

 Saturday       15 May 2021      Weekend

 Sunday         16 May 2021      Weekend
                                                                Focus Day:
                                                                a) Cross-Border settlement instructions flagged
 Monday         17 May 2021        Open        CCP Batch Day    as “already-matched”: CBF customer receives
                                                                b) INTR/REDM
                                                                Announcement Day TEND
 Tuesday        18 May 2021        Open        CCP Batch Day    Focus Day Settlement Allegements

 Wednesday      19 May 2021        Open        CCP Batch Day    Focus Day T2S Maintenance Window
                                                                Focus Day Cancellation Reason Codes
                                                                a) Cancelled by Agent (CSUB)
 Thursday       20 May 2021        Open        CCP Batch Day
                                                                b) End of recycling period (CXLR)
                                                                Announcement Day BONU and DVCA
                                                                Focus Day TEND (start of period)
 Friday         21 May 2021        Open
                                                                Ex-Date BONU and DVCA
 Saturday       22 May 2021      Weekend

 Sunday         23 May 2021      Weekend

 Monday         24 May 2021       Closed                        Public Holiday

 Tuesday        25 May 2021        Open        CCP Batch Day    Record Day BONU and DVCA
                                                                Focus Day
                                                                a) T2S Maintenance Window
 Wednesday      26 May 2021        Open        CCP Batch Day
                                                                b) BONU
                                                                c) DVCA
                                                                Focus Day Cancellation Reason Codes:
                                                                a) Cancelled by Agent (CSUB)
 Thursday       27 May 2021        Open        CCP Batch Day
                                                                b) End of recycling period (CXLR)
                                                                Announcement Day INTR (flat and non-flat bond)
 Friday         28 May 2021        Open        CCP Batch Day

 Saturday       29 May 2021      Weekend

 Sunday         30 May 2021      Weekend
                                                                Focus Day:
                                                                a) Cross-Border settlement instructions flagged
                                                                as “already-matched”: CBF customer receives
 Monday         31 May 2021        Open        CCP Batch Day
                                                                b) TEND (end of period and payment)
                                                                Focus and Announcement Day REDM cancellation
                                                                Record Day INTR (flat and non-flat bond)

   Clearstream Banking Frankfurt                                                                      April 2021
   Customer Simulation Period May and June 2021                                                                9
Customer Simulation calendar: CBF Release May and June 2021

                             Availability   CCP Simulation
Test Day                                                     Dedicated test case Focus Day
                              of IMS23        Calendar
                                                             Focus Day:
Tuesday       1 June 2021       Open        CCP Batch Day    a) Settlement Allegements
                                                             b) INTR (flat and non-flat bond)
                                                             Focus Day Cancellation Reason Codes:
Wednesday    2 June 2021        Open        CCP Batch Day    a) Cancelled by Agent (CSUB)
                                                             b) End of recycling period (CXLR)
Thursday     3 June 2021       Closed                        Public Holiday

Friday       4 June 2021        Open

Saturday     5 June 2021      Weekend

Sunday       6 June 2021      Weekend
                                                             Focus Day Cross-Border settlement instructions
Monday       7 June 2021        Open        CCP Batch Day    flagged as “already-matched”: CBF customer
                                                             receives
Tuesday      8 June 2021        Open        CCP Batch Day

Wednesday    9 June 2021        Open        CCP Batch Day    LION Interface will be closed
                                                             No dedicated Focus Days; only for verification of
Thursday     10 June 2021       Open        CCP Batch Day
                                                             test results
                                                             No dedicated Focus Days; only for verification of
Friday       11 June 2021       Open
                                                             test results
                    Table 1 - Customer Simulation calendar for May and June 2021

  Clearstream Banking Frankfurt                                                                     April 2021
  Customer Simulation Period May and June 2021                                                              10
4. Preparation test execution
This chapter provides the detailed description of dedicated test cases for the customer simulation during the
period from 10 May to 9 June 2021. Each of the following sections provides a short summary of the
modifications. The detailed functional specifications are available in the following Announcements3:
       •    Information on the production launch in June 2021 – T2S Release 5.0 and CBF services; and
       •    Changes in CBF supporting migration of security clearing to the C7 SCS platform applying Trade
            Date Netting (TDN).
If CBF requires information from the customer for a successful test execution, these prerequisites are
defined in the following.

4.1 Creation of holdings
Between 28 April and 6 May 2021, CBF will collect the existing holdings of predefined securities from
customer accounts and redistribute them via CBF account 4424 to the respective CBF main account
(xxxx 000).
Once the holdings are set up, customers acting in ICP mode can verify them via the CASCADE Online
functionality (HOST / PC) or MT535 Statement of Holding, if subscribed in CBF Customer Simulation
environment (IMS23). In the above-mentioned time frame, customers must not enter test cases nor transmit
instructions via an automated connectivity channel towards IMS23 or UTEST. In addition, the CASCADE Online
functionality (HOST / PC) must not be used. This will allow the CBF Customer Readiness team the
preparation of the Focus Days in time.
Customers who are connected to UTEST and receive (settlement) reporting might notice instruction flows
between CBF and T2S from setup activities.
The table below shows the ISINs that will be maintained by the CBF T2S Settlement Functionality team:

                                                                         Nominal      Tradeable via           CCP
    ISIN                  Name
                                                                         available                            eligible4
    DE0005104400          ATOSS SOFTWARE AG                                 10,000    XFRA neue Gattung       VMS
    DE0005420004          CEYONIQ AG                                        10,000    Not applicable          No
    DE0005790331          FROEHLICH BAU AG VZO I.A.                         10,000    XFRA neue Gattung       No
    DE0006202005          SALZGITTER AG O.N.                               20,0005    XETR, XFRA              C7 SCS
    DE000A0D6554          NORDEX SE O.N.                                          0   XFRA                    C7 SCS
    DE000A0E5U85          0,59% DEPFA FDG III 05/UND. FLR                  100,000    Not applicable          No
    DE000A0XYM45          ECOLUTIONS GMBH+CO.KGAA                           10,000    Not applicable          No
    DE000A1E8ZB7          2,836% NECKARPRI GMBH 11/47                      100,000    Not applicable          No
    DE000A1K0SM8          FMS WERTMGMT MTN 11/21                           100,000    XFRA neue Gattung       No
    DE000DZ9VAR6          DZ BANK IS.C15 12/22 VAR                         100,000    XFRA neue Gattung       No
    FR0000054082          SI PARTICIPAT. FID. 5408                          10,000    Not applicable          No
    FR0000125486          VINCI S.A. INH. EO 2,50                           10,000    Not applicable          No
    FR0010070110          REP. FSE OAT/STRIP04.2032                        100,000    XETR, XFRA              No
                  Table 2 - Dedicated ISINs for the Customer Simulation period May and June 2021

3
 If there are updates, then customers are requested to use the latest version of the Announcements for their preparation
of test cases.
4
    CCP will send instructions either from the current Securities CCP (VMS) or from the future C7 SCS platform.
5
    No test cases must be entered for this ISIN until the BONU cancellation test will have been executed on 12 May 2021.

      Clearstream Banking Frankfurt                                                                           April 2021
      Customer Simulation Period May and June 2021                                                                    11
4.2 Processing of Stock Exchange transactions (CCP / non-CCP)
Upon customer demand, Stock Exchange trades can be entered for settlement via LION or CASCADE. Trades
can be set up with a Market Identifier Code (MIC) in the trading system. If the flag:
    •   “XFRA” is used, they are forwarded as non-CCP trades towards the CBF system LION.
    •   “XETR” is used, they are processed via CCP and clearing results will be provided to CBF for further
        processing in CASCADE.
In general, the simulation environment of Eurex Clearing AG (ECAG) for CCP activities will be connected to
the CBF Customer Simulation environment (IMS23). As ECAG will introduce a new clearing platform (C7 SCS)
in September 2021, CBF will offer a testing of Stock Exchange trades cleared by the current clearing
platform (Securities CCP, VMS) as well as of Stock Exchange trades cleared by the new clearing platform
(C7 SCS). For details, please check section 5.5.
For information on available instruments, please refer to the websites of the trading systems www.xetra.com
and www.eurexchange.com.
ECAG will forward test instructions to CBF in ICP mode. These instructions will be transmitted on the “CCP
Batch Days” only. The batch days defined by ECAG are shown in the “Table 1 - Customer Simulation calendar
for the period May and June 2021” in section 3.5.
Once Stock Exchange instructions arrive at CBF, they will be forwarded for settlement to UTEST. ECAG will
delete pending (unsettled) transactions according to their testing procedures enabled for the current
Securities CCP (VMS) and the future C7 SCS processing in simulation.
Stock Exchange transactions processed as LION instructions will be supported during the period from
10 May to 9 June 2021.

                            Figure 2 - Process chain Stock Exchange instruction

   Clearstream Banking Frankfurt                                                                 April 2021
   Customer Simulation Period May and June 2021                                                          12
4.3 Limitation for pending instructions
During the test execution, each customer participating in the simulation is requested to consider that high
volumes of pending instructions in UTEST impacts the performance of all T2S test environments. Therefore,
the customer should actively monitor the number of pending instructions and ensure that no more than 500
pending instructions are active in the test system. To determine the number, all instructions must be
considered, independent from:
   •   The status, that is, matched, unmatched, hold or release;
   •   The business procedure, that is, domestic and cross-border instructions, Stock Exchange trades
       (via LION or Securities CCP (VMS) / C7 SCS) and instructions resulting from corporate actions;
   •   The connectivity channel, that is, ICP or DCP mode;
   •   The test activity conducted with Clearstream Banking (for example One Clearstream) or Eurex
       Clearing AG (ECAG).
This limitation applies to all accounts (and sub-accounts) of a customer that are set up in CBF Customer
Simulation environment (IMS23) for testing.
T2S aims to reduce the number of pending trades prior to the deployment of a major or minor release in
order to minimise the capacity and resources needed for the deployment. Therefore, T2S changes the
recycling period in the week before the installation. It was set to one T2S Settlement Day for matched and
unmatched instructions. The standard values (five T2S Settlement Days for unmatched instructions and 60
days for matched instructions) are restored after the successful deployment in UTEST. The T2S Release Day
for the T2S Release 5.0 is scheduled on Friday, 9 April 2021, that is, that the recycling period will be changed
starting from Monday, 6 April 2021.

4.4 Cancellation of pending LION instructions
Pending Stock Exchange trades (LION instructions) are requested to be settled in UTEST. The customer
needs to ensure that the necessary position is available in CBF Customer Simulation environment (IMS23).
If the necessary holding is missing, the CBF Customer Readiness team can be contacted via the Connectivity
Support team to check whether a position transfer is possible.
Customers and counterparties need to consider the successful settlement or cancellation while preparing
the test cases.
Any pending LION instruction must be cancelled on Friday, 11 June 2021 by the customer and, if necessary,
also by its counterparty.

4.5 Custody services environment settings
The general framework for corporate actions processing in CBF defines that events will be executed via CBF
KADI (Kapitaldienste) or the OneClearstream service. The processing of events in the Customer Simulation
environment (IMS23) will only be executed for KADI. The events (Focus Days) scheduled in IMS23 are limited
to the scope defined in this document. CBF asks customers participating in the test to ensure that their
internal test system for securities master data will support these ISINs.
The table below lists the event-driven activities and the related processing during the Customer Simulation
period May and June 2021.

   Clearstream Banking Frankfurt                                                                    April 2021
   Customer Simulation Period May and June 2021                                                             13
Event-related activity    General information related to the KADI processing
Cancellation period for   During the customer simulation, pending market claims and transformations
pending market claims     are cancelled after ten business days. A reminder is sent after five business
and transformations       days.

Cash proceeds             During the customer simulation, all income events distributed in Euro, for
                          securities where CBF acts in the role as the Issuer-CSD, will be transferred to
                          the existing Custody Default T2S DCA, if not differently defined in the static data
                          for the main / sub account.
                          For securities that are not covered by the CBF Corporate Action Cash Payment
                          model, the liquidity transfer will be initiated in the CBF DD1 cycle using the T2
                          ASI procedure 3.
                          The cash movements for income events are reported via MT942 “Interim
                          Transaction Report” and MT950 “Statement Message”.

Corporate action          Customers will be informed via MT564, if they have requested the related KADI
announcement              settings in the account master and subscribed for the connectivity settings.
                          The MT564 will be send out to the customers in real-time if the event was
                          subject to a change on a record date or to a cancellation / repayment.
                          The notification will be provided as shown in the event details or highlighted in
                          “Table 1 - Customer simulation calendar for the period May and June 2021”.
Corporate action          For income events distributed in Euro and for securities where CBF acts in the
confirmation              role of Issuer-CSD, the confirmation will be provided once the T2S settlement
                          confirmation was received.
                          For securities that are not covered by the CBF Corporate Action Cash Payment
                          model, the confirmation will be provided once the payment authorisation has
                          been provided by the paying agent.
                          Customers will be informed via MT566, if they have requested the related KADI
                          settings in account master and subscribed for the connectivity settings.
                          The corporate action confirmation will be provided on payment date as shown
                          in the event details or in “Table 1 - Customer simulation calendar for the period
                          May and June 2021”.
Corporate Action          Provisioning timings of the Corporate Action reporting can be found in
Reporting                 Appendix A.
Creation of market        The related free of payment (FoP) instructions or payment free of delivery
claims                    (PFoD) instructions are generated and forwarded to T2S depending on the
                          successful settlement of the underlying transaction.
Creation of reverse       The related free of payment (FoP) instructions as well as payment free of
claims                    delivery (PFoD) instructions are generated and forwarded to T2S.
DCP reporting (UTEST)     Customers acting as “Securities DCP” will receive sese.023, sese.024 and
                          sese.025, if enabled by the customers.
                          Customers acting as “Cash DCP” can subscribe for the related cash messages
                          (camt), if agreed with the responsible National Central Bank.
Detection period for      During the customer simulation, the market claims and transformation period
market claims and         is five business days.
transformations           Customer acting in DCP mode have to consider that the Transformation
                          Detection Period (TDP) at T2S is defined as 20 business days. Even if customers
                          can set up instructions during the entire T2S Transformation Detection Period
                          of 20 business days, only instructions set up in the first five business days will
                          be transformed by CBF.

 Clearstream Banking Frankfurt                                                                    April 2021
 Customer Simulation Period May and June 2021                                                             14
Event-related activity      General information related to the KADI processing
 Instruction                 Customers can enter settlement instructions on their demand, if they want to
 management                  test market claims, reverse claims, or transformations. Based on the
                             compensation rules, instructions require the final settlement; therefore,
                             customers need to agree with their counterparties on the respective instruction
                             details.
                             Customers who wish to settle free of payment (FoP) instructions can set up
                             such instructions against the account “CBF W/KUNDENSIMU CRC (PASSIV),
                             account number 1117 000 / BIC11: DAKVDEFFT77”, if no other counterparty is
                             available.
                             “Table 7 – OTC instruction flow” provides the required information to enter OTC
                             settlement instructions.
 Securities proceeds         All securities proceeds will be settled on UTEST. Securities movements and
                             balances will be reported via the automated connectivity channels
                             (SWIFT, MQ and File Transfer) as well as via the CASCADE Online
                             Functionalities (HOST / PC).
 Security positions          Please refer to section “4.1. Creation of holdings” for an overview of the
                             holdings provided for each registered account as defined in “Table 2 -
                             Dedicated ISINs for Customer Simulation Period May and June 2021”.
                             Customers must ensure that they have sufficient holdings in the respective
                             ISIN on the registered accounts to successfully participate in the customer
                             simulation.
 Usage of OPT-OUT flag       Market and reverse claims as well as transformations will be processed
 and Ex / Cum flag           according to the compensation rules. Customers can still overrule the general
                             record date criteria to generate claims by using the respective flags (opt-out
                             flag / cum flag / ex flag) within their OTC instructions. For more details, please
                             refer to the CBF Compensation Handbook.
                 Table 3 – IMS23 system parameters for corporate actions processing (KADI)

4.6 Decommissioning of the Liquidity Transfer service
On 29 March 2021, CBF Customer Readiness Team will cancel all (standing) orders for liquidity transfers in
CBF Customer Simulation environment (IMS23) as the T2S Cash Forecast is not transmitted to CBF any
longer. In future, there will be no cash provisioning on T2S Dedicated Cash Account (DCA) via CBF. Hence, for
upcoming simulation activities customers need to fund the DCA on their demand. For more details, please
refer to the Information on the production launch in June 2021 – T2S Release 5.0 and CBF services.

4.7 Issue Declaration Form
The Issue Declaration Form is a fillable form for the written submission of any issue encountered during the
customer simulation phase for the various CBF enhancements and the T2S Release 5.0. The form is
requested to be sent if a test issue raised by a customer cannot be resolved immediately by the respective
support team. The completed declaration form will initiate an investigation of the issue. This procedure aims
to avoid misunderstandings and to accelerate the solution process.
If the test issue relates to a test case as described in section 5, please mention it in the description.
Completed Issue Declaration Forms can be sent to connect@clearstream.com.

   Clearstream Banking Frankfurt                                                                       April 2021
   Customer Simulation Period May and June 2021                                                                15
5. Execution of test cases
In the CBF Customer Simulation Registration Form, dedicated test cases are included. This chapter provides
the detailed test data and steps for a successful test execution. Based on this framework, customers can
define further requirements and can create settlement instructions on their demand, if applicable.

5.1 Cross-border settlement instructions testing in collaboration with ESES
      5.1.1 Introduction
The T2S services enhancements related to already-matched cross-border instructions and to additional
information in cross-border settlement allegements can be tested against T2S Parties or Security Accounts
(SAC) with other T2S In-CSDs connected. CBF will support these test cases in the CBF Guided Customer
Simulation.
In close collaboration with Euroclear France (ESES) an end-to-end-test will be offered using a “CBF Mock
Account” created for simulation activities in the ESES Homologation (simulation) environment.
        5.1.2 Test narrative
On Focus Days defined for this testing (see table 1 in section 3.5), CBF will create testing instructions at ESES
which will enable customers to simulate the processing of the new cross-border services.
Customers who would like to participate in these Focus Days must register the required CBF account master
to receive these instructions.
        5.1.3 Already-matched instructions
The simulation of already-matched (“ALM”) cross-border instructions against a Euroclear participant
account requires a specific account setup with CBF as well as at ESES. The setup is done during the
preparation of the customer simulation period by CBF based on the customer registration. Registration
forms received late may result in a late setup. Customers concerned will be informed if the setup will be
enabled after the preparation period by email. Please note, that CBF grants the CBF accounts masters
registered for ALM cross-border deliveries all possible privileges, such as
   •    Cancellations;
   •    Modifications (partial settlement flag or priority);
   •    Instruction linkage; and
   •    Hold / Release functionality.
The privileges to be set up for ALM cross-border deliveries will be provided in the simulation environments
only. Customer that would like to use the service in production are requested to contact their Relationship
Officer.
In simulation only ISO transaction code “TRAD” will be offered. This is different to production where a set of
ISO transaction codes is admitted for ALM cross-border instructions.
Whereas CBF will set up in ESES Homologation environment only ALM cross-border deliveries against CBF
account masters, customers can instruct deliveries against CBF Mock account themselves.
ALM cross-border deliveries against CBF Mock account set up by customers anytime during the simulation
need to respect the following necessities.
    •   Customer acting in ICP mode can use the CBF Counterparty CSD account “4702” or ESES France BIC
        “SICVFRPPXXX” whereas customers acting in DCP mode must use the before mentioned BIC;
    •   Free of Payment (FoP);
    •   ISIN FR0000054082 “SI PARTICIPAT. FID. 5408”;
    •   ISO Transaction Code “TRAD”;
    •   Already-matched flag must be set;
    •   Counterparty account 6607 respectively BIC DAKVDEFFFR2; and
    •   Any further instruction details can be entered on customers’ demand.

   Clearstream Banking Frankfurt                                                                    April 2021
   Customer Simulation Period May and June 2021                                                             16
The ALM cross-border deliveries coming from Euroclear France CBF Mock Account 6607 (related BIC
DAKVDEFFFR2) in favour of registered CBF account masters will contain the following instruction details:
    •   Test is executed exclusively on the Focus days and shows:
            o    Intended settlement date 17 May 2021, 31 May 2021, or 7 June 2021; and
            o    Trade date 12 May 2021, 27 May 2021 or 2 June 2021;
    •   Free of Payment (FoP);
    •   ISIN FR0010070110 “REP. FSE OAT/STRIP04.2032”;
    •   ISO Transaction Code “TRAD”;
    •   Party Hold Status is “released”;
    •   Instruction narrative: Customer Simulation Test Case XBDR ALM.

        5.1.4 Settlement Allegements
CBF will set up cross-border instructions coming from Euroclear France (ESES) that will create Settlement
Allegements (MT578) and Statements of Settlement Allegement (MT586) with the field Place of Clearing
(:94H::CLEA//) filled with the BIC of the clearing house Eurex Clearing AG (EUXCDEFFXXX) on registered
customer main accounts.
During the customer simulation, the cross-border instructions against CBF account masters will be set up in
the ESES Homologation (simulation) environment. They will bear counterparty account 6607 respectively BIC
DAKVDEFFFR2 and will contain the following instruction details:
    •   Test is executed exclusively on the Focus days and shows:
            o    Intended settlement date 11 May 2021, 18 May 2021, or 1 June 2021; and
            o    Trade date 10 May 2021, 14 May 2021 or 28 May 2021;
    •   Free of Payment (FoP);
    •   ISIN FR0000125486 “VINCI S.A. INH. EO 2,50”;
    •   ISO Transaction Code “TRAD”;
    •   Party Hold Status is “released”;
    •   Instruction narrative: Customer Simulation Test Case XBDR Allegements.

5.2 Instruction Management
Customers acting in ICP can use CBF Customer Simulation environment (IMS23) to create regression tests of
the current CBF settlement functionalities on their demand. If, for instance, a customer intends to receive
“CBF Settlement Status and Processing Advise (MT548)” messages indicating the instruction status “Failing”
in real-time after the T2S Cut-off times (see “T2S-0692-SYS: Send status update message upon transition to
‘Failing’”), related unmatched instructions can be created.
Customers acting in DCP mode might use the T2S Pre-Production environment (UTEST) to enter the
instructions in A2A or U2A mode. Based on the subscription with T2S, the reporting will be transmitted. If the
“YCON” flag is used, CBF will send the settlement reporting based on the latest connectivity settings.
Customers that would like to test a scenario for Passive Matching can instruct via the account “CBF
W/KUNDENSIMU CRC (PASSIV), account number 1117 000 / BIC11: DAKVDEFFT77”. Positions transferred
into this mock account will not be returned to the delivering party.
LION trades can be submitted during the whole Customer Simulation period (10 May to 9 June 2021).

   Clearstream Banking Frankfurt                                                                  April 2021
   Customer Simulation Period May and June 2021                                                           17
5.2.1 Additional Cancellation Reason Codes
During the CBF Guided Customer Simulation, Focus Days will be offered to test “Cancellation Reason Codes”
that will be introduced with the Release in June 2021. The following reason codes will be added to the CBF
service offering. As customers cannot create the following cancellation reason codes without support of CBF,
customers are requested to register on their demand.
              Reason code       Description                           Usage in CBF
              CORP              Cancelled due to Corporate Action     This value will be added to CBF’s
                                                                      service offering and passed on to
                                                                      customers if transmitted by T2S.
              CSUB              Cancelled by Agent                    CBF will use this value if CBF
                                                                      Operations cancels an
                                                                      instruction in the CASCADE
                                                                      instruction management
                                                                      (“Storno”)
              CXLR              End of Life, that is an instruction   a) CBF sets up a correction /
                                exceeds the recycling period               additional booking (AA99);
                                                                      b) In future, CBF will use the
                                                                           value “EXPI” if Vaults
                                                                           instructions (AA16 / AA18)
                                                                           are pending for more than
                                                                           90 [5] business days and are
                                                                           cancelled by the CASCADE
                                                                           system.
                                  Table 4 – Cancellation Reason Codes for Focus Days
CBF recommends customers to check the complete list of additional “Cancellation Reason Codes” in the
Information on the production launch in June 2021 – T2S Release 5.0 and CBF services, section “CBF –
Enhancements for T2S Release 5.0” and enter further test cases if required.
    •   Cancellation Reason Code “CORP”
        Instructions to be cancelled need to be instructed before the Focus Day for the redemption payment
        on 17 May 2021 with ISIN DE000A1E8ZB7 “2,836% NECKARPRI GMBH 11/47”. On 31 May 2021, this
        redemption will be reversed so that pending instructions on payment day will be cancelled. More
        details of the test case can be found in section 5.3.6. The customer’s main account has to be
        registered for the “redemption and reason code” test case.
    •   Cancellation Reason Codes “CSUB”
        Pending Free of Payment (FoP) instructions have to be created before Focus Days 20 May 2021,
        27 May 2021 and 2 June 2021 with ISIN DE000A0E5U85 “0,59% DEPFA FDG III 05/UND. FLR” against
        CBF account 4424 000.
    •   Cancellation Reason Codes “CXLR” related to AA99
        Pending Free of Payment (FoP) instructions have to be created before Focus Days 20 May 2021,
        27 May 2021 and 2 June 2021 with ISIN DE000A0E5U85 “0,59% DEPFA FDG III 05/UND. FLR” against
        CBF account 4424 000.
    •   Cancellation Reason Codes “CXLR” related to Vaults Processing
        The cancellation period for “Vaults” instructions will be shortened during the customer simulation
        period May / June 2021 to five business days instead of 90 business days in production. Therefore,
        “Vaults” instructions to be cancelled can be instructed with ISIN DE000A0XYM45 “ECOLUTIONS
        GMBH+CO.KGAA” anytime during the Customer Simulation period on a customer’s main account
        registered for this test case. They will be cancelled automatically.

   Clearstream Banking Frankfurt                                                                   April 2021
   Customer Simulation Period May and June 2021                                                            18
5.3 Corporate Action Processing (KADI)
      5.3.1 Introduction
In order to allow customers a testing of the modifications in claims management and custody reporting, CBF
will set up several event types, that is a distribution of bonus shares, a dividend and two interest payments as
well as a redemption. Additionally, a tender offer will be offered to test the new option “CAOP” in CBF’s
corporate action message flow.

        5.3.2 Test narrative for Corporate Actions
CBF will prepare non-income and income events for testing related to corporate action instructions, claims
management and custody reporting. The participation in the test cases will be enabled if the related
Registration Form is provided by 23 April 2021. All customers who registered for the interest payment Focus
Days will participate in the test case “Flat bonds interest payment” (section 5.3.4) as well.
All Focus Days will be executed based on the conditions outlined in “Table 3 - IMS23 system parameters for
corporate actions processing (KADI)”. On the following pages, event-driven details are defined for the event
type tender offer, bonus share, dividend payment, interest payment and redemption.
All corporate events offered for testing will bear the “COAF” so that customers can test a processing of this
new corporate event reference type.

        5.3.3 Bonus share distribution
 Focus Day                      Bonus share (CBF in its role as Issuer CSD)
 Event type                     TA 211 – Mandatory event

 SWIFT event ID                 BONU

 ISIN                           DE0005790331

 Security description           FROEHLICH BAU AG VZO I.A.

 Instrument type                Equity

 Notification date              20 May 2021

 Issuance details               Ratio 1:2

 Ex-date                        21 May 2021

 Record date                    25 May 2021

 Value / payment date           26 May 2021

 Event-specific details         The security distribution will be initiated on record date and forwarded to
                                the T2S on the end of business day.
                                The test case will support the market and reverse claim procedure.

   Clearstream Banking Frankfurt                                                                    April 2021
   Customer Simulation Period May and June 2021                                                             19
5.3.4 Flat bonds interest payment
Focus Day                  Interest payment
Event type                 TA 110 – Mandatory event

SWIFT event ID             INTR

ISIN                       DE000DZ9VAR6

Security description       DZ BANK IS.C15 12/22 VAR

Instrument type            Bond

Notification date          27 May 2021

Payment details            Interest rate: 3%;
                           Payment will be executed in Euro upon receipt of funds.
Record date                31 May 2021

Value / payment date       1 June 2021

Event-specific details     All customers who registered for the interest payment Focus Days will
                           participate in this test case as well.
                           The cash distribution will be initiated on record date and forwarded to T2S
                           approximately at 09:30 on payment date. CBF will create a PFoD
                           instruction (sese.023) to credit the Dedicated Cash Account with T2S.

  Clearstream Banking Frankfurt                                                              April 2021
  Customer Simulation Period May and June 2021                                                       20
5.3.5 Change of option CAOP in tender and repurchase offer notifications
Focus Day                  Tender offer
Event type                 TA 280 – Voluntary event

SWIFT event ID             TEND

ISINs                      DE0005420004

Security descriptions      CEYONIQ AG

Instrument type            Equity

Notification date          17 May 2021

Event details              Ratios: 1 interim share for 1 share tendered and 1€ for 1 interim share
                           Interim ISIN: DE000A0D6554 “NORDEX SE O.N.”
Instruction Period         21 – 31 May 2021

Deadline                   31 May 2021, 10:00

Payment date for interim   31 May 2021
shares
Value / payment date for   31 May 2021
cash
Event-specific details     Registered customers will receive a Corporate Action Notification (MT564)
                           for the tender offer.

                           In order to test the new option “SECU”, they need to accept the offer by
                           sending a Corporate Action Instruction (MT565) with “:13A::CAON//001”
                           and “:22F::CAOP//SECU” by 31 May 2021, 10:00. Additionally, CBF advises
                           customers to use “CORP” and “COAF”.

                           The subsequent receipt of the interim shares and their exchange into cash
                           will be processed as a regression test.

  Clearstream Banking Frankfurt                                                             April 2021
  Customer Simulation Period May and June 2021                                                      21
5.3.6 Transformations in cash:
       Usage of hold / release status and modification flag and
       Reversal of Transaction Price Claim
Focus Day                  Interest payment (private bond)
Event type                 TA 110 – Mandatory event

SWIFT event ID             INTR

ISIN                       DE000A1E8ZB7

Security description       2,836% NECKARPRI GMBH 11/47 17.01.G

Instrument type            Bond

Notification date          11 May 2021

Payment details            Interest rate: 3%;
                           Payment will be executed in Euro upon receipt of funds.
Record date                14 May 2021

Value / payment date       17 May 2021

Event-specific details     The cash distribution will be initiated on record date and forwarded to T2S
                           approximately at 09:30 on payment date. CBF will create a PFoD
                           instruction (sese.023) to credit the Dedicated Cash Account with T2S.

  Clearstream Banking Frankfurt                                                              April 2021
  Customer Simulation Period May and June 2021                                                       22
Focus Day                  Final redemption (private payment)
Event type                 TA 130 – Mandatory event

SWIFT event ID             REDM

ISIN                       DE000A1E8ZB7

Security description       2,836% NECKARPRI GMBH 11/47 17.01.G

Instrument type            Bond

Notification date          11 May 2021

Payment details            Redemption amount 100%;
                           Payment will be executed in Euro upon receipt of funds.
Maturity date              14 May 2021

Value / payment date       17 May 2021

Reversal date              31 May 2021

Event-specific details     Customers, who registered for the test case with the enhanced hold /
                           release status procedure for transformations, need to have pending
                           instructions in Party Status “hold” on the payment date of the event. The
                           instruction transformed will be set up with the status “on hold” based on
                           the underlying instruction. Consequently, customers will have the
                           possibility to test the release functionality for transformations.

                           CBF will reverse the redemption on 31 May 2021 so that registered
                           customers can test the processing of the updated reversal of the
                           Transaction Price Claim. For this test case, pending instructions have to be
                           in place on the original payment date of the event as well. If customers
                           intend to re-use the transformations set up for the hold / release testing,
                           they need to release the transformations one business day before the
                           reversal.

                           On reversal day 31 May 2021, pending instructions on payment day will be
                           cancelled with the new cancellation reason code “CORP”. For more
                           details, see section 5.2.1.

                           The cash distribution will be initiated on last trading date and forwarded to
                           T2S approximately at 09:30 on payment date. CBF will create a PFoD
                           instruction (sese.023) to credit the Dedicated Cash Account with T2S.
                           The security withdrawal will be initiated after successful cash distribution.

  Clearstream Banking Frankfurt                                                                April 2021
  Customer Simulation Period May and June 2021                                                         23
5.3.7 Implementation of SRDII indicator in custody reporting
Focus Day                  Dividend payment
Event type                 TA 120 – Mandatory event

SWIFT event ID             DVCA

ISIN                       DE0005104400

Security description       ATOSS SOFTWARE AG

Instrument type            Equity

Notification date          20 May 2021

Payment details            Distribution amount: EUR 1,00;
                           payment will be executed in Euro upon receipt of funds.
Ex-date                    21 May 2021

Record date                25 May 2021

Value / payment date       26 May 2021

Event-specific details     The dividend payment will be set up for a security subject to SRDII. Like
                           this, customer can simulate the processing of the new field
                           “:17B::SRDC//Y” in the related Corporate Action Notification (MT564).
                           The cash distribution will be initiated on record date and forwarded to T2S
                           approximately at 09:30 on payment date. Customers will receive the cash
                           by a PFoD instruction (sese.023).
                           The test case will support the market and reverse claim procedure and
                           will be subject to German withholding tax.

  Clearstream Banking Frankfurt                                                               April 2021
  Customer Simulation Period May and June 2021                                                        24
5.3.8 Market claims for late OTC trades in case of interest payments
Focus Day                  Interest payment (private bond)
Event type                 TA 110 – Mandatory event

SWIFT event ID             INTR

ISIN                       DE000A1K0SM8

Security description       FMS WERTMGMT MTN 11/21

Instrument type            Bond

Notification date          27 May 2021

Payment details            Interest rate: 3%;
                           payment will be executed in Euro upon receipt of funds.
Record date                31 May 2021

Value / payment date       1 June 2021

Event-specific details     Customers registered for this test case need to set up OTC instructions –
                           and if required for regression testing Stock Exchange trades via T7 –
                           pending on payment date with a requested settlement date before
                           payment date. Only this scenario enables customers to test the market
                           claims generated for late settled instructions.
                           The cash distribution will be initiated on record date and forwarded to T2S
                           approximately at 09:30 on payment date. Customers will receive the cash
                           by a PFoD instruction (sese.023).
                           The test case will support the market claim procedure for late settled OTC
                           and LION instructions.

  Clearstream Banking Frankfurt                                                              April 2021
  Customer Simulation Period May and June 2021                                                       25
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