How To Fix CN050 - Control key not available for external processing

SAP Error Message - Details

• Message type: E = Error

• Message class: CN - Meldungen für Netzpläne

• Message number: 050

• Message text: Control key not available for external processing

What causes this issue?

The control key has either not been defined or no indicator has been
maintained for external processing.

System Response

INCLUDE 'NA_ALLG_NOVERARBEITUNG' OBJECT DOKU ID TX
Check to make sure that you have entered the correct control key for
external processing.

How to fix this error?

INCLUDE 'NA_ALLG_VORGEHEN' OBJECT DOKU ID TX
Check to make sure that the control key has been correctly defined. If
necessary, define an indicator for external processing.

<DS:TRAN.OP67>Execute function</>
ENDIF

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CN050 - Control key not available for external processing ?

  The SAP error message CN050 ("Control key not available for external processing") typically occurs in the context of project management and controlling when you are trying to create or process a project-related transaction, such as a network or activity, and the control key specified is not valid for the operation you are attempting to perform.
  Cause:
  
  Invalid Control Key: The control key you are using is not defined for the type of processing you are trying to perform. Control keys determine how activities are processed in SAP, including whether they can be externally processed.
  Configuration Issues: The control key may not be configured correctly in the system, or it may not be assigned to the relevant project or network.
  Missing Authorizations: The user may not have the necessary authorizations to use the specified control key.
  Project Type Restrictions: Certain control keys may be restricted to specific project types or structures.
  
  Solution:
  
  
  Check Control Key Configuration:
  
  Go to the transaction code OPKP or OPL8 to check the configuration of control keys.
  Ensure that the control key you are using is set up for external processing.
  
  
  
  Verify Control Key Assignment:
  
  Check if the control key is assigned to the relevant project or network. You can do this by navigating to the project definition or network and reviewing the settings.
  
  
  
  Use a Valid Control Key:
  
  If the control key is not valid for external processing, consider using a different control key that is configured for the operation you are trying to perform.
  
  
  
  Check User Authorizations:
  
  Ensure that the user has the necessary authorizations to use the control key. This can be checked with the help of your SAP security team.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help files related to control keys and external processing to understand the requirements and limitations.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Control Keys: Control keys in SAP are used to define how activities are processed in project management. They control various aspects such as scheduling, costing, and whether an activity can be externally processed.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CJ20N (Project Builder), CN21 (Create Network), and CJ02 (Change Project) to manage projects and networks effectively.
  SAP Notes: Check for any SAP Notes related to the CN050 error message for specific patches or updates that may address the issue.
  
  By following these steps, you should be able to identify the cause of the CN050 error and implement a suitable solution.