Diagnosis
In the context of rescheduling, one or several schedule lines wereprepared for an availability check, for example, these were scheduledfor delivery for the document enclosure - due to the activatedCustomizing settings with the document type <(>&<)>V1& key, deliveringplant <(>&<)>V2&, delivery type <(>&<)>V3& and check rule <(>&<)>V4&.Delivery scheduling is however no longer selected as active for the runtime in Customizing for this key.

System Response
An availability check does not result for the schedule line(s), inorder to avoid false results.

Procedure
Correct the Customizing settings.