Diagnosis
You wish to have the system generate or change a purchase order for anadditional automatically. In order for this tobe possible, delivery &V1&, to which theadditionals document is assigned, must be blocked. However, thisdocument is currently being processed.
No follow-on purchase order is generated, as processing the deliverycould result in changes being made to the additionals document. Forexample, if you made changes now to the delivery quantity
or planned goods issue date in an item in deliveryV1, this would lead to changes in the additionals document.

System Response
The purchase order for the additional is not generated/changed.

Procedure
Try again later.