SAP Message RU535 - Order split for order &1 has been executed

Diagnosis
You are trying to create a confirmation for order &V1&. However, thisis not allowed, as partial quantities for individual operations havealready been split using the order split function.
Confirmations for an order, in which the order split functionhas created split orders, can only be created with reference to anoperation.

Procedure
Create the confirmations with reference to an operation.