Hi Muariha,
Based on your information, do you mean that after the COB started, for any online transactions (such as ATM and other online transaction) being processed, these transactions will be based on the account balance before COB and the updated account balance (after the online transactions are done) will be post after COB finished and the SOD is being processed? So, how will the following scenario be handled in the system?
1. Before COB started, the account balance of account A is $100.
2. After the COB started, there is an ATM transaction which need to debit $100 from account A. The system accept (or will not accept) this ATM transaction as the account balance of Account A (image before COB) is $100. After this ATM processing, balance of Account A should be $0, however, since the SOD is not yet started, this transaction is not yet post to account A and at the moment, Account A still have $100 at the account.
3. During the COB process, account A was being debited by $40, and the balance of account A is now being updated as $60 in the LIVE files.
4. After COB process completed, and SOD is started, the ATM transaction mentioned in point 2 is being posted to the LIVE files, however, now, the balance of account A is $60 (instead of $100) and enough for debiting...then, now, how the system will handle?