SAP Note 25456 - Credit values for partially delivered sales orders

Symptom:

VKM1, VKM4, RVKRED01: The credit value for sales orders with several items is too low, and in the extreme case zero.

Cause and prerequisites

Program error: If an item was marked as completely delivered, the following were no longer taken into account.

Solution
Correction in 3.0 and 2.2G with P22K008675.