Enter a valid bank account number

What causes this issue?

You specified an account number which is not valid.

System Response

Corresponding message displayed.

How to fix this error?

In some situations, account numbers that are rejected by the SAP system
may still be valid due to special arrangements. Check whether this
applies here.
INCLUDE 'CUSTOMIZED_MESSAGE_INFO' OBJECT DOKU ID TX

Error message extract from SAP system. Copyright SAP SE.