Availability and schedules of the customer simulation

15.12.2021

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 July 2022.

To enlarge click on the image

  • During the CBF Free Simulation customers can execute test cases on their demand.
  • For a CBF Release a Guided Simulation will be offered, if the scope of the new service requires dedicated test cases. 

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 31 March to 6 May 2022. 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. The latest UTEST schedule provided by ECB does not list dedicated test cases in 2022. As soon as the test details are defined by T2S, CBF will inform customers about the upcoming events.

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. 

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. 

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 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.