Hi Mohammed,

What version and patch lever are you on? It is always good to have this information with each post. Things change between patches and versions.

From knowledgebase article #44850:

1. This is the normal behavior of the product.
2. When the payment is validated (status = In the Bank) you are not allowed to make any changes on the payment.
3. You can reprint the check before the payment is posted and system will assign a new check number to the payment.
4. Workaround to reprint a check is to do an accounting cancellation on the payment and issue a new check (select the Options menu and chose Accounting cancellation).

If this resolves your issue, please mark this as a verified answer.

Thanks!