How To Fix CL645 - Characteristic & not in class on &

SAP Error Message - Details

• Message type: E = Error

• Message class: CL - Classification

• Message number: 645

• Message text: Characteristic & not in class on &

What causes this issue?

You want to delete characteristic &v1& from the class on &v2&. However,
the characteristic is not in the class on this date.

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?

If you want to delete the characteristic from the class, enter a date
when the characteristic is used in the class.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CL645 - Characteristic & not in class on & ?

  The SAP error message "CL645 Characteristic & not in class on &" typically occurs when you are trying to assign a characteristic to a class in the classification system, but the characteristic is not defined in the specified class. This can happen in various scenarios, such as when creating or modifying classes or characteristics in the SAP system.
  Cause:
  
  Characteristic Not Defined: The characteristic you are trying to use has not been defined in the class you are working with.
  Incorrect Class Assignment: The characteristic may belong to a different class or may not be assigned to any class at all.
  Typographical Error: There may be a typo in the characteristic name or class name.
  Authorization Issues: The user may not have the necessary authorizations to view or modify the characteristic in the specified class.
  
  Solution:
  
  
  Check Characteristic Definition:
  
  Go to the transaction code CT04 (for characteristics) and verify that the characteristic exists and is correctly defined.
  Ensure that the characteristic is assigned to the correct class.
  
  
  
  Check Class Assignment:
  
  Use transaction code CL02 (for classes) to check if the characteristic is assigned to the class you are trying to use.
  If it is not assigned, you can add it by editing the class and including the characteristic.
  
  
  
  Correct Typographical Errors:
  
  Double-check the names of the characteristic and class for any spelling mistakes or incorrect entries.
  
  
  
  Authorization Check:
  
  Ensure that you have the necessary authorizations to access and modify the characteristic and class. You may need to contact your SAP security administrator if you suspect authorization issues.
  
  
  
  Recreate the Characteristic:
  
  If the characteristic is missing or incorrectly defined, you may need to recreate it using transaction CT04.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  CT04: Create/Change Characteristic
  CL02: Change Class
  CL03: Display Class
  
  
  SAP Documentation: Refer to SAP Help documentation for detailed information on characteristics and classes in the classification system.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to this error message.
  
  By following these steps, you should be able to resolve the error message and successfully assign the characteristic to the desired class.