Bank account

We are on Oracle R12 and trying to define a bank account for a customer. When we hit on 'create' button and put in all the account information the system tell me that account already exists (we have a supplier also as that customer) as the bank is already set up for the supplier. So we try to 'Add' the account, however, in the find account screen we are not able to find the bank account . In fact we cannot search anything there no matter what criteria we give.

Any clue?

Thanks

Naushad