How To Fix CH026 - The usage cannot be changed

SAP Error Message - Details

• Message type: E = Error

• Message class: CH - CAD/PP integration messages

• Message number: 026

• Message text: The usage cannot be changed

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CH026 - The usage cannot be changed ?

  The SAP error message CH026 ("The usage cannot be changed") typically occurs in the context of changing the usage of a characteristic in the classification system. This error indicates that the system does not allow the modification of the usage of a characteristic because it is already being used in a way that restricts such changes.
  Causes:
  
  Existing Assignments: The characteristic is already assigned to classes, objects, or other structures that prevent its usage from being changed.
  Data Consistency: SAP enforces data integrity and consistency, and changing the usage of a characteristic could lead to inconsistencies in the classification system.
  System Restrictions: Certain characteristics may have predefined usages that cannot be altered due to system settings or configurations.
  
  Solutions:
  
  Check Assignments: Review where the characteristic is currently being used. You may need to remove it from any classes or objects before changing its usage.
  Use Transaction Codes: Use transaction codes like CL02 (Change Class) or CT04 (Change Characteristic) to check the current assignments and dependencies.
  Consult Documentation: Refer to SAP documentation or help files for specific guidelines on changing characteristic usage.
  System Configuration: If you have the necessary authorizations, check the configuration settings in the classification system to see if there are any restrictions in place.
  Contact SAP Support: If you are unable to resolve the issue, consider reaching out to SAP support for assistance, especially if this is a critical change.
  
  Related Information:
  
  Classification System: Understanding how the classification system works in SAP can help in managing characteristics and their usages effectively.
  Data Model: Familiarize yourself with the data model and relationships between characteristics, classes, and objects to avoid such issues in the future.
  User Authorizations: Ensure that you have the necessary authorizations to make changes to characteristics and their usages.
  
  By following these steps, you should be able to identify the cause of the error and take appropriate actions to resolve it.