How To Fix CL029 - Characteristic "&" already assigned to class

SAP Error Message - Details

• Message type: E = Error

• Message class: CL - Classification

• Message number: 029

• Message text: Characteristic "&" already assigned to class

What causes this issue?

The characteristic you want to enter is already entered as a
characteristic for this class. You can only use a
<DS:GLOS.characteristic>characteristic</> once in each class.
The class either contains this characteristic directly or a
characteristic with a <DS:GLOS.user-defined_data_type>user-defined data
type</> which contains this characteristic as an individual
characteristic.

System Response

The system checks that characteristics do not occur more than once in a
class. The check includes indirect allocations via characteristics with
a user-defined data type.

How to fix this error?

Please check the characteristics in your class.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CL029 - Characteristic "&" already assigned to class ?

  The SAP error message CL029, which states "Characteristic '&' already assigned to class," typically occurs when you attempt to assign a characteristic to a class in the Classification System, but that characteristic is already assigned to another class. This can happen in the context of material classification, where characteristics are used to define the properties of materials or other objects.
  Cause:
  
  Duplicate Assignment: The characteristic you are trying to assign is already linked to another class. In SAP, a characteristic can only be assigned to one class at a time.
  Incorrect Class Assignment: You may be trying to assign a characteristic that is intended for a different class or object type.
  System Configuration: There may be issues with the configuration of the classification system or the characteristics themselves.
  
  Solution:
  
  
  Check Existing Assignments:
  
  Go to the classification view in SAP and check which class the characteristic is currently assigned to. You can do this by navigating to the transaction code CL02 (Change Class) and entering the characteristic name to see its current assignments.
  
  
  
  Remove Existing Assignment:
  
  If you determine that the characteristic should be moved to a different class, you can remove it from the current class using transaction code CL02 and then reassign it to the desired class.
  
  
  
  Create a New Characteristic:
  
  If the characteristic needs to be unique for the new class, consider creating a new characteristic with a different name or identifier.
  
  
  
  Consult Documentation:
  
  Review the SAP documentation or help files related to classification and characteristics to ensure you are following the correct procedures.
  
  
  
  Check Authorization:
  
  Ensure that you have the necessary authorizations to make changes to classifications and characteristics in the system.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  CL01: Create Class
  CL02: Change Class
  CL03: Display Class
  CT04: Create Characteristic
  CT05: Change Characteristic
  CT06: Display Characteristic
  
  
  
  SAP Notes: Check SAP Notes for any known issues or updates related to classification and characteristics. You can search for relevant notes in the SAP Support Portal.
  
  
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  
  
  By following these steps, you should be able to resolve the CL029 error and successfully manage your characteristics and classes in SAP.