Partner bank must be specified for individual payee

What causes this issue?

You have defined an individual payee in the document and also a partner
bank. However, the partner bank is determined from the address data of
the individual payee when payment is made.

System Response

Warning

How to fix this error?

Specify the credit institute in the address data of the payee and
delete the entry in the partner bank field.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.