Availability and schedules of the customer simulation

25.08.2022

The CBF customer simulation environment (IMS23) is connected to the T2S Pre-Production environment (UTEST). The comprehensive processing of test cases demands the availability of both test environments. Additionally, the test schedule that is applicable for a desired test day (that is, either T2S Synchronised Standard Day, T2S Change Request Test Day or T2S Release Day) must be considered for a successful execution.

The below graphic provides a forecast for the different customer simulation periods until June 2023.

To enlarge click on the image

  • During the CBF Free Simulation customers can execute test cases on their demand. In preparation of the T2S Release 6.2 to be implemented on
    21 November 2022, simulation activities in “free mode” can be executed from end-October.
  • CBF regularly offers a Guided Customer Simulation. This is applicable for T2S minor and major releases if the introduction of a CBF project requires market readiness activities or if the scope of the new service needs dedicated test cases. 
    Customer simulation will be offered for the project Corporate Actions Harmonisation (CAH) – KADI DE Migration to OneClearstream Asset Servicing (OneCAS), also named (CAH - KADI DE migration), in the period from 22 August to 22 September 2022. A detailed description of the simulation activities is available on the OneClearstream Rollout Documentation webpage.

The CBF customer simulation environment (IMS23) and the T2S Pre-Production environment (UTEST) are regularly updated for deployment activities. Based on the CBF implementation schedule, IMS23 is planned to be closed from:

  • 23 September to 21 October 2022;
  • 22 December 2022 to 2 January 2023; and
  • 7 April to 5 May 2023.

Therefore, on the business day prior to the deployment activities, with the end of day procedures, CBF will close all connectivity channels towards IMS23 and UTEST.

In addition, maintenance activities are required. Therefore, on every Friday, after 14:00, testing will not be conducted as software updates will be installed. Additional downtimes might become necessary due to deployment activities by T2S and/or CBF. 

Instructions can be entered or transmitted depending on the customer’s connectivity mode. Customers acting in ICP mode provide their instructions via CASCADE Online functionality (HOST/PC) or use an automated connectivity channel (SWIFT, MQ, File Transfer) to IMS23. Over the course of the day (22 September 2022), CBF will close all connectivity channels towards IMS23 and UTEST. 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
    6 October 2022.
  • 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
    6 October 2022. 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 6 October 2022 after the re-opening, 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 customer SWIFT interface, from where the test messages will be sent and received, must support the “SWIFT future mode”. 

Customers acting in DCP mode transmit their instructions towards UTEST. T2S recommends unsubscribing from message/report subscriptions if the UTEST is not actively used. Also, the number of instructions (Securities Settlement Transaction Instruction, sese.023) must be reduced during the Start of Day (SoD) in order to limit potential impacts on the performance of UTEST.

The current planning for the UTEST shows the following dedicated test cases that are executed under the control of T2S or ECB. The test execution impacts the processing of the "T2S Synchronised Standard Day". Test cases performed by CBF customers can therefore not be processed on UTEST as usual. As a result, the related settlement reporting cannot be transferred via T2S or CBF according to the regular test schedule:

  • 7 September 2022: Delay in RTGS start (processing without liquidity) (EUR);
  • 14 September 2022: Insolvency testing;
  • 21 September 2022: T2S Open during RTGS closing Day (EUR);
  • 29 September 2022: Cashgen and Colgen testing;
  • 2 November 2022: Back-up conference call tool test for the Crisis Managers;
  • 9 November 2022: Crisis communication tool/facilities exercise;
  • 16 November 2022: Delay in the start of NTS;
  • 7 December 2022: Insolvency testing; and
  • 14 December 2022: Back-up OMEGA tool testing.

In preparation of the implementation of the T2 / T2S consolidation project in November 2022, the liquidity management procedures in UTEST will be modified after TACO Migration Weekend Dress Rehearsal planned for mid-July 2022. In the new T2 platform, direct Participants can use below the options to manage liquidity:

  • Immediate Liquidity Transfer via T2 RTGS GUI
    T2 RTGS GUI can be used to transfer funds from the RTGS DCA to the T2S DCA. For details on how to use this functionality please refer to section “Liquidity Transfer – New Screen” of the Real-Time Gross Settlement User Handbook.
  • Immediate Liquidity Transfer via T2 CLM GUI
    T2 CLM GUI can be used to transfer funds from the CLM MCA to the T2S DCA. For details on how to use this functionality please refer to section “Liquidity Transfer – New Screen” of the Central Liquidity Management User Handbook.
  • Configure Standing Orders in CRDM
    Standing order for liquidity transfers can be created via CRDM GUI (U2A). This functionality offers the possibility to create a daily liquidity transfer. Standing orders can be configured to execute at certain time or event. Please refer to Common Reference Data Management User Handbook regarding the set-up and the related fields descriptions.
  • Liquidity Transfer via A2A camt.050 message
    Participants can use the A2A channel for liquidity transfers from RTGS DCA or CLM MCA to T2S DCA. If so, the participant must provide in the creditor account of the T2S DCA to be funded. Please refer to the Real-Time Gross Settlement User Detailed Functional Specifications and Central Liquidity Management User Detailed Functional Specifications.

In addition, today's automated “T2S Cash Sweep out” to clear the balance on the T2S DCA with a simultaneous transfer of cash to the T2 cash account will become optional. A sweep out can be achieved by setting up a standing order in T2 CRDM. If customers require an automated liquidity transfer to the RTGS DCA, it is mandatory that a standing order is set up.

Allowing an efficient settlement on UTEST, customers are requested to manage their liquidity transfer to their DCA used for simulation activities related to Clearstream Banking Frankfurt and Luxembourg as well as Eurex Clearing AG. Potential changes in the settings are requested to be introduced as part of the migration activities.

Based on the test or infrastructure requirements, T2S will run the processing day using the

  • T2S Synchronised Standard Day, that is, the general daily test schedule applies.
  • T2S Change Request Test Day, which is required for T2S dedicated test cases.
  • T2S Release Day, which is defined for installation procedures required by the T2S Actors.
  • T2S Living Timing, which is announced for specific test procedures. In UTEST the operational schedule defined for the production environment will apply. T2S informed that this production like schedule will be used on 29 and 30 August and from 2 to 8 September 2022.

T2S Settlement Procedure

T2S Synchronised Standard Day

T2S Change Request Test
upon announcement

T2S Release Day
upon announcement

Start of Testing

07:00

07:00

07:00

Real-Time Settlement

Partial Settlement 1

08:00

08:00

08:00

Partial Settlement 2

10:00

10:00

10:00

Partial Settlement 3

12:00

12:00

11:00

Partial Settlement 4

Not supported

12:30a

12:15

Partial Settlement 5

14:00

14:00

12:30

DvP / Cash SR Cut-off

14:30

14:30

13:00

Collateral reimbursement

15:00

14:50

13:30

BATM / CBO Cut-off

15:10

15:10

13:40

Inbound LTO Cut-off / Automated cash sweep

15:15

15:15

13:45

Securities SR / FoP Cut-off

15:30

15:30

14:00

End of Day / Start of Day

Change Business Day

16:15

16:15

14:45

Feeds from Collateral Management System

16:30

16:30

15:00

Start Night-Time / Cash Injection

17:15

17:15

15:45

Night-Time Settlement

End of Testing

19:00

19:00

17:30

a. Times that deviate from the T2S Synchronised Standard Day are shown in bold.