How To Fix CC521 - Change number function/type is not known

SAP Error Message - Details

• Message type: E = Error

• Message class: CC - ECM: Messages

• Message number: 521

• Message text: Change number function/type is not known

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CC521 - Change number function/type is not known ?

  The SAP error message CC521 ("Change number function/type is not known") typically occurs in the context of change management within SAP, particularly when dealing with change numbers in the Change Management (CM) module. This error indicates that the system cannot recognize the function or type associated with the change number you are trying to use.
  Causes:
  
  Invalid Change Number: The change number you are trying to use may not exist or may have been deleted.
  Configuration Issues: The configuration for change management may not be set up correctly, leading to the system not recognizing the change number.
  Authorization Issues: The user may not have the necessary authorizations to access or use the specified change number.
  Data Inconsistencies: There may be inconsistencies in the data related to the change number, such as missing or incorrect entries in the relevant tables.
  
  Solutions:
  
  
  Verify Change Number: Check if the change number you are using is valid and exists in the system. You can do this by navigating to the relevant transaction (e.g., transaction code CC02 for changing change numbers) and searching for the change number.
  
  
  Check Configuration: Ensure that the configuration for change management is correctly set up. This may involve checking the settings in the Customizing (SPRO) for change management and ensuring that the change number types are defined properly.
  
  
  Review Authorizations: Make sure that the user has the necessary authorizations to access and use the change number. You may need to consult with your SAP security team to verify the user's roles and permissions.
  
  
  Data Consistency Check: Perform a consistency check on the data related to the change number. This may involve checking the relevant tables in the database to ensure that all necessary entries are present and correct.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for more detailed information on the specific change number function/type you are trying to use.
  
  
  Contact SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance. They may be able to provide insights based on the specific configuration and setup of your SAP environment.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CC01 (Create Change Number), CC02 (Change Change Number), and CC03 (Display Change Number).
  Change Management Process: Understanding the overall change management process in SAP can help in troubleshooting issues related to change numbers.
  SAP Notes: Check for any SAP Notes related to error CC521, as there may be specific patches or updates that address known issues.
  
  By following these steps, you should be able to identify the cause of the CC521 error and implement a suitable solution.