SAP Message WA674 - Receiver type determination func. mod. &: Parameter & is not optional

Diagnosis
The specified parameter of the specified function module fordetermining the receiver type is not optional. Since it is not filledwhen SWE_EVENT_CREATE is called, this is not allowed.

System Response
The action was terminated, the event was not triggered.

Procedure
Define the specified parameter as optional and assign it a standardvalue.