How To Fix CN854 - You can only enter a cost control key

CN854 - Overview

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 854

• Message text: You can only enter a cost control key

What causes this issue?

You have entered a control key for this activity that is not valid for
general costs activities.

System Response

INCLUDE 'NA_ALLG_NOVERARBEITUNG' OBJECT DOKU ID TX

How to fix this error?

Check your entry. Enter a control key permitted for general costs
activities.
INCLUDE 'NA_ALLG_VORGEHEN' OBJECT DOKU ID TX
Check whether the control key has been correctly defined. Make any
necessary changes.

Error message extract from SAP system. Copyright SAP SE.

CN854 - Details

• The SAP error message CN854 ("You can only enter a cost control key") typically occurs in the context of project management or controlling modules when you are trying to enter or modify data related to cost planning or budgeting in a project. This error indicates that the system expects a cost control key to be entered, but it is either missing or incorrectly specified.
  
  Cause:
  
  Missing Cost Control Key: The cost control key is a required field in certain transactions related to project costing. If it is not filled in, the system will throw this error.
  Incorrect Configuration: The configuration settings for the project or cost center may not allow for the entry of certain types of cost control keys.
  Authorization Issues: The user may not have the necessary authorizations to enter or modify the cost control key.
  Data Entry Error: There may be a typographical error or incorrect data entry in the field where