SAP Message 06338 - Use GR-based invoice verification

Diagnosis
You are entering an item with evaluated receipt settlement (ERS) andnew price determination at the time of goods receipt. In this case, youshould use GR-based invoice verification. Only in this way can it beensured that return deliveries and reversals are valuated correctly(i.e. with the conditions of the underlying goods receipt).

Procedure
Set the indicator for GR-based invoice verification.