Diagnosis
In the copying controls for copying billing document (F2) from creditmemo (CR) or debit memo (DR), the price source field should be blank orcontain G.
This message appears if VBTYP for the source billing document is 'M'and the VBTYP for the target billing document 'O' or 'P'.
Using this copy control, a credit or debit memo is created directlyfrom the billing document.

Procedure
Leave the field blank or enter 'G'.