How To Fix COM_DIFF_KEY101 - Key type & has already been assigned to the object type &

SAP Error Message - Details

• Message type: E = Error

• Message class: COM_DIFF_KEY - Messages for Differentiation Key

• Message number: 101

• Message text: Key type & has already been assigned to the object type &

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 COM_DIFF_KEY101 - Key type & has already been assigned to the object type & ?

  The SAP error message COM_DIFF_KEY101 indicates that a key type has already been assigned to a specific object type, which means that there is a conflict in the assignment of keys within the system. This error typically arises in the context of configuration or master data management, particularly when dealing with characteristics, classes, or other object types in the SAP system.
  Cause:
  
  Duplicate Key Assignment: The key type you are trying to assign is already linked to another object type. This can happen if the same key type is being reused inappropriately across different object types.
  Configuration Issues: There may be issues in the configuration settings where the key types are defined, leading to conflicts.
  Data Integrity Issues: If there are inconsistencies in the master data or configuration data, it can lead to this error.
  
  Solution:
  
  Check Existing Assignments: Review the existing assignments of the key type in the system. You can do this by navigating to the relevant configuration settings in SAP (e.g., transaction codes like CL02 for class maintenance or CT04 for characteristic maintenance).
  Modify Key Assignments: If you find that the key type is indeed assigned to another object type, you may need to either:
  
  Change the key type for the new object you are trying to create or modify.
  Remove the existing assignment if it is no longer needed (ensure that this does not affect other processes).
  
  
  Consult Documentation: Refer to SAP documentation or help files for guidance on how to manage key types and object types effectively.
  Check for Customizations: If your SAP system has custom developments or enhancements, ensure that these are not causing the conflict.
  Testing: After making changes, test the configuration to ensure that the error does not reoccur.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CL02, CT04, SE11 (Data Dictionary), and SE80 (Object Navigator) for managing classes and characteristics.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Authorization: Ensure that you have the necessary authorizations to make changes to key assignments in the system.
  Consult with Colleagues: If you are unsure about the implications of changing key assignments, consult with colleagues or SAP experts within your organization.
  
  By following these steps, you should be able to resolve the COM_DIFF_KEY101 error and ensure that your key assignments are correctly configured in the SAP system.