4.1 Migration Guidelines

This topic describes the information's on Migration Guidelines.

Migrations into the Migration schema can be performed on any date and in several iterations. However, Final data migration activity is recommended to be executed on a weekend/long weekend to allow enough time frame for migration related activities, reconciliation, business verification etc. Migration activities shall start after completion of End of financial Input in Production environment on upgrade date.

On Migration Day:

• Complete the daily operations in the OBA production environment.
• Switch off the interfaces and no further transactions are allowed in the OBA production environment.
• After completing migration stage 1 and 2, perform the verification and/or reconciliation activities for reconciliation between source and migration schema.
• Execute the Data Transfer stage which moves data from Migration Schema to actual schema of OBA production environment.
• Once all data has been moved, perform the verification and/or reconciliation activities for reconciliation between source and target environments.
• After completion of reconciliation activity – execute the End of Day workflow in OBA production environment.

Table 4-1 Sample - Field Description

Calendar Date (Date on which migration is done)	OBA Branch Date	OBA Working/Holiday	Remarks
11-Jul-2025 - Friday	11-Jul-2025 - Friday	Working Day	Complete the daily operations in the source system and move branch till EOFI
12-Jul-2025 - Sunday	11-Jul-2025 - Friday	Working Day	Execute Migration Activities. Complete Reconciliation
13-Jul-2025 - Sunday	11-Jul-2025 - Friday	Working Day	Execute regular End of Day workflow in production environment to proceed with Date change & BOD
13-Jul-2025 - Sunday	14-Jul-2025 - Monday	Working Day	OBA production environment is available for transaction input.