How To Fix /SMB/DATA_CHG_MGMT121 - Determination of keys not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: /SMB/DATA_CHG_MGMT -

• Message number: 121

• Message text: Determination of keys not possible

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 /SMB/DATA_CHG_MGMT121 - Determination of keys not possible ?

  The SAP error message /SMB/DATA_CHG_MGMT121: Determination of keys not possible typically occurs in the context of data change management, particularly when the system is unable to determine the necessary keys for a specific operation or transaction. This can happen in various scenarios, such as during data replication, data migration, or when working with change documents.
  Causes:
  
  Missing Configuration: The necessary configuration for the data change management might not be set up correctly. This could include missing or incorrect settings in the relevant customizing tables.
  Data Inconsistency: There may be inconsistencies in the data that prevent the system from determining the keys. This could be due to missing entries or incorrect relationships between data objects.
  Authorization Issues: The user executing the transaction may not have the necessary authorizations to access the required data or perform the operation.
  Technical Issues: There could be underlying technical issues, such as problems with the database or the application server.
  
  Solutions:
  
  Check Configuration: Review the configuration settings related to data change management. Ensure that all necessary customizing is in place and correctly configured.
  Data Consistency Check: Perform a consistency check on the relevant data. Look for missing entries or relationships that could be causing the issue. You may need to run specific reports or transactions to identify inconsistencies.
  Authorization Check: Verify that the user has the appropriate authorizations to perform the operation. You can check the user roles and authorizations in transaction SU01 or SU53.
  Debugging: If the issue persists, consider debugging the process to identify where the key determination is failing. This may require technical expertise.
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message. There may be patches or updates available that resolve the issue.
  Contact SAP Support: If you are unable to resolve the issue, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error, including the context in which it occurs.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes that may help in troubleshooting, such as SE80 (Object Navigator), SE37 (Function Module), or SE11 (Data Dictionary).
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Documentation: Review SAP documentation related to data change management for additional insights and best practices.
  
  By following these steps, you should be able to identify the cause of the error and implement a suitable solution.