Diagnosis
The bank data &V1& of the business partner, used in contract accountV2 with partner v3 as incoming payment details for alternativepayer &V4& has been deleted.

Procedure
Use the pushbutton situated to the right of this line to jump tomaintenance of contract account &V2&. Here, you should choose otherincoming payment details for alternative payer &V4& and then transferthe changes.
These changes are then saved when you save the current businesspartner.