Availability and schedules of the customer simulation
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 December 2023.
To enlarge click on the image
- During the CBF Free Simulation customers can execute test cases on their demand.
- 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 restart for the project Corporate Actions Harmonisation (CAH) - KADI DE Migration to OneClearstream Asset Servicing (OneCAS), also named (CAH - KADI DE migration) - on 2 May and end on 7 June 2023.
- for the production launch of T2S Release in November 2023 and functional modifications by CBF on 20 November 2023 is planned for 23 October until 17 November 2023.
The CBF customer simulation environment (IMS23) and the T2S Pre-Production environment (UTEST) are regularly updated for deployment activities. 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.
Based on the CBF implementation schedule, IMS23 is planned to be closed from:
- 5 April to 1 May 2023;
- 21 September 2023 to 20 October 2023; and
- 21 December 2023 to 3 January 2024.
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. For the upcoming Customer Simulation period, IMS23 will not be available for roll-out activities during the period from 5 to 19 April 2023.
On 4 April 2023, 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 17 April 2023.
- 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.
- 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.
- 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.
On 17 April 2023, 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 CBF and T2S Release June 2023.
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:
- 10 May 2023: Insolvency of CSD/NCB participant testing;
- 31 May 2023: OMEGA tool testing;
- 21 June 2023: Insolvency of CSD/NCB participant testing;
- 26 July 2023: Delay in RTGS start (processing without liquidity);
- 13 September 2023: Insolvency of CSD/NCB participant testing; and
- 6 December 2023: Insolvency of CSD/NCB participant testing.
After the implementation of the T2/T2S consolidation project in March 2023, the modified liquidity management procedures remain in UTEST. On the 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.
The T2S Test Service Desk, before the deployment of any major and minor release will refresh the UTEST by changing the recycling period in the T2S UTEST environment for matched pending instructions and for unmatched pending instructions to one business day. With this option, the pending instructions with an intended settlement day far in the past are cancelled. The change to recycling parameter will be done in the same week when the deployment is executed. The T2S Test Service Desk will revert the parameters to their original values (60 business days for pending matched instructions and five business days for pending unmatched instructions) during the deployment weekend. The changes will be valid as of the next testing day. This process will also be applied on Friday four weeks after the implementation of a major and a minor release.
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 Settlement Procedure
T2S Synchronised Standard Day
|T2S Change Request Test|
T2S Release Day
Start of Testing
Partial Settlement 1
Partial Settlement 2
Partial Settlement 3
Partial Settlement 4
Partial Settlement 5
DvP / Cash SR Cut-off
BATM / CBO Cut-off
Inbound LTO Cut-off / Automated cash sweep
Securities SR / FoP Cut-off
End of Day / Start of Day
Change Business Day
Feeds from Collateral Management System
Start Night-Time / Cash Injection
End of Testing
a. Times that deviate from the T2S Synchronised Standard Day are shown in bold.