SAP Message RU207 - Activity & not found in network &

Diagnosis
The activity that you entered for the completion confirmation does notexist in this network.

System Response
INCLUDE 'NA_ALLG_NOVERARBEITUNG' OBJECT DOKU ID TX

Procedure
INCLUDE 'NA_ALLG_URSACHEN' OBJECT DOKU ID TX
RESET N1
Check whether you have entered the correct key for the activity.
Check whether the activity whose key you have entered, exists in thisnetwork.
Enter a different key for the activity.