How To Fix CN056 - Activity account assignment not allowed for this network

CN056 - Overview

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 056

• Message text: Activity account assignment not allowed for this network

What causes this issue?

You cannot write any costs to the activity for the network whose key
you have maintained.
The costs for the network can only be written to the network header.

System Response

INCLUDE 'NA_ALLG_NOVERARBEITUNG' OBJECT DOKU ID TX

How to fix this error?

RESET N1
Check that you have maintained the proper key for the network. Make any
necessary changes.
Delete the key for the activity.

Error message extract from SAP system. Copyright SAP SE.

CN056 - Details

• The SAP error message CN056, which states "Activity account assignment not allowed for this network," typically occurs in the context of project systems or network activities in SAP. This error indicates that there is an issue with the account assignment for a specific activity within a network.
  
  Cause:
  
  Network Structure: The network activity may not be set up to allow account assignments. This can happen if the network is not configured to allow costs to be assigned to specific activities.
  Activity Type Settings: The activity type used in the network may not be configured correctly to allow for account assignments.
  Cost Element: The cost element associated with the activity may not be valid or may not allow for the type of account assignment being attempted.
  Project Profile Settings: The project profile assigned to the project may have restrictions that prevent account assignments for certain activities.
  Authorization Issues: The user may not have the necessary authorizations to