How To Fix CL168 - Class type &: function not allowed for change number &

SAP Error Message - Details

• Message type: E = Error

• Message class: CL - Classification

• Message number: 168

• Message text: Class type &: function not allowed for change number &

What causes this issue?

You want to delete a characteristic or a class using change number
&V2&, which has parameter effectivity.
However, parameter effectivity is not set to active for class type &V1&
in Customizing.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

This change can affect classifications, so this function is not allowed
with a change number that has parameter effectivity.
Use a different change number or activate parameter effectivity for the
class type in Customizing by choosing Cross-Application Components ->
Classification System.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CL168 - Class type &: function not allowed for change number & ?

  The SAP error message CL168 indicates that a certain operation is not allowed for a class type when a change number is involved. This typically occurs in the context of change management in SAP, particularly when dealing with class types in the SAP system.
  Cause:
  The error message CL168 is triggered when you attempt to perform an operation (like modifying or deleting a class) that is not permitted for the specified class type while a change number is active. Change numbers are used in SAP to manage changes to objects in a controlled manner, and certain operations may be restricted when a change number is in effect.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Change Number Status: Verify if the change number is active. If it is, you may need to either:
  
  Deactivate the change number if it is not needed anymore.
  Wait until the change number is no longer in use.
  
  
  
  Review Class Type Restrictions: Understand the specific restrictions associated with the class type you are working with. Some class types may have limitations on what can be changed or deleted when a change number is active.
  
  
  Use the Correct Transaction: Ensure you are using the appropriate transaction code for the operation you are trying to perform. Some operations may require specific transactions that handle change management differently.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for detailed information on the class type and its associated operations. This can provide insights into what is permissible under the current change management settings.
  
  
  Contact SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support or your internal SAP team for assistance. They may have additional insights or solutions based on your specific system configuration.
  
  
  Related Information:
  
  Change Management in SAP: Understanding how change numbers work in SAP can help you navigate issues related to object changes.
  Class Types: Familiarize yourself with the different class types in SAP and their specific rules and restrictions.
  SAP Notes: Check for any relevant SAP Notes that may address this error or provide additional context.
  
  By following these steps, you should be able to address the CL168 error and proceed with your intended operations in SAP.