SAP Message 8B806 - Bank ID &1 or account ID &2 or company ID &3 not unique

Diagnosis
Either the used bank ID or account ID is also used in other companycodes or the used company ID is not uniquely assigned.

System Response
It is not possible to assign a proper bank account.

Procedure
Check the house bank maintanance throughout your company codes (tablesT012 and T012K)
Proceed
and the maintanance of the company ID (T045T).
Proceed