Same bank account in several company codes: -> See long text

What causes this issue?

Bank account &v1& is used in several company codes with bank key &v2&.
This case is not allowed to occur.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Look through table T012K for the above-mentioned bank account and
correct the incorrect entries. The connection between bank key and
HBKID (ID for the house bank) is established via table T012.
Maintain the house bank table.
IF &DEVICE& = 'SCREEN'
<DS:TRAN.FI12>Proceed</>
ENDIF

Error message extract from SAP system. Copyright SAP SE.