Once a reconciliation is complete, it cannot be edited. An adjustment can be posted to that period, but the reconciliation process cannot be run again.

For more information, refer to the Banks Guide and How to enter bank adjustments in The Financial Edge.

Alternative solutions:

Restore to a backup of your database before the incorrect bank reconciliation.

Or

Contact your Account Manager about Data Services to unreconcile your bank. After unreconciling the bank, the bank can be rereconciled from the beginning of the bank register.