SAP Message 0D887 - The new due date for net payt is a period for which int. already calc.

Diagnosis
You have changed the due date for net payment for an item that issupported for balance interest calculation on insurance object level.However, the new due date for net payment lies in a period for whichinsurance has been calculated.

Procedure
Set the due date for net payment to a date for which interest has notyet been calculated, or just reverse the interest documents that havebeen created for this combination of business partner, insurance objectand currency in the balance interest calculation since this due date fornet payment.