Payment conversion not allowed in FM area &

What causes this issue?

The update profile settings that are assigned to the FM area do not
allow for payment selection.

System Response

No payment selection takes place.

How to fix this error?

Check whether the correct update profile is assigned to the FM area.

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.