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