Diagnosis
The quantity unit that you have maintained in the operation does notexist.

System Response
INCLUDE 'NA_ALLG_NOVERARBEITUNG' OBJECT DOKU ID TX

Procedure
INCLUDE 'NA_ALLG_VORGEHEN' OBJECT DOKU ID TX
Check the quantity units you have maintained and change them ifnecessary.
IF &DEVICE& = 'SCREEN'
Proceed
ENDIF