How To Fix CN030 - You cannot assign to activity "&"

CN030 - Overview

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 030

• Message text: You cannot assign to activity "&"

What causes this issue?

You cannot assign a production order or maintenance order to an
activity.
You must assign the production or maintenance order to the same WBS
element as is assigned to the operation.

System Response

INCLUDE 'NA_ALLG_NOFUNKTION' OBJECT DOKU ID TX

How to fix this error?

Check your entries.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CN030 - You cannot assign to activity "&" ?

  The SAP error message CN030, which states "You cannot assign to activity '&'", typically occurs in the context of project management and cost accounting within the SAP system. This error indicates that there is an issue with assigning a cost or activity to a project or internal order.
  Causes of Error CN030
  
  
  Activity Type Not Defined: The activity type you are trying to assign may not be defined in the system or may not be available for the specific controlling area.
  
  
  Activity Type Not Assigned to Cost Center: The activity type may not be assigned to the cost center or internal order you are working with.
  
  
  Incorrect Status: The project or internal order may be in a status that does not allow for new assignments (e.g., closed or completed).
  
  
  Missing Authorizations: The user may not have the necessary authorizations to perform the assignment.
  
  
  Incorrect Configuration: There may be configuration issues in the controlling area or project