Diagnosis
The work center that you have specified in the operation does notexist.

Procedure
INCLUDE 'NA_ALLG_MOEGLICH' OBJECT DOKU ID TX

• Check whether you have entered the correct key for the work center.
Change it if necessary.

• If you do not change the key for the work center, scheduling is carried
out using either
the calendar that you have maintained in the operation, or
the Gregorian calendar.