SAP Message R1591 - Bank Details &1 are Still being Used and Must Not be Deleted

Diagnosis
You tried to delete set of bank details. These bank details are stillbeing used somewhere in the system, meaning that you are not permittedto delete.

System Response
Error message. The bank details are not deleted.

Procedure
Look at the where-used list for the bank details. If you still want todelete them, change the reference to these bank details in theapplications affected. In most cases you can navigate directly to thecorresponding application from the where-used list (by calling thecontext menu with the right mouse button). You can then try again todelete the bank details.

Note
If a business partner merely changes banks, and wants to transfer alltransactions from the old set of bank details to the new one, changethe bank details directly under the existing ID. In this case, allreferences are transferred automatically to the new bank details.