How To Fix HR99S00_MMT021 - Test MMT Process Messages Table failed, ET_MESSAGE empty

SAP Error Message - Details

• Message type: E = Error

• Message class: HR99S00_MMT - Message Mapping Tool

• Message number: 021

• Message text: Test MMT Process Messages Table failed, ET_MESSAGE empty

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message HR99S00_MMT021 - Test MMT Process Messages Table failed, ET_MESSAGE empty ?

  The SAP error message HR99S00_MMT021 indicates that there was a failure in the test MMT (Mass Maintenance Tool) process, specifically related to the messages table, and that the ET_MESSAGE output is empty. This error typically arises during mass maintenance activities in SAP, particularly in HR (Human Resources) modules.
  Cause:
  
  Configuration Issues: There may be a misconfiguration in the MMT settings or the specific process being executed.
  Data Issues: The data being processed may not meet the required criteria or may be incomplete, leading to no messages being generated.
  Authorization Problems: The user executing the MMT process may not have the necessary authorizations to perform the action.
  Technical Errors: There could be underlying technical issues, such as missing or corrupted data in the database tables involved in the MMT process.
  
  Solution:
  
  Check Configuration: Review the configuration settings for the MMT process to ensure they are set up correctly. This includes checking the selection criteria and the parameters used in the mass maintenance.
  Validate Input Data: Ensure that the data being processed is complete and valid. Check for any missing fields or incorrect values that could lead to the process failing.
  Review Authorizations: Verify that the user has the necessary authorizations to execute the MMT process. If not, adjust the user roles or permissions accordingly.
  Debugging: If the issue persists, consider debugging the process to identify where it is failing. You can use transaction codes like SE80 or SE37 to analyze the function modules involved.
  Check Logs: Look at the application logs (transaction SLG1) for any additional error messages or warnings that could provide more context about the failure.
  Consult SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error message or provide patches or updates that could resolve the issue.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MMT, SE80, SE37, and SLG1 for debugging and monitoring.
  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 the MMT process for best practices and troubleshooting steps.
  
  If the problem continues after trying the above solutions, it may be necessary to escalate the issue to your SAP Basis or technical support team for further investigation.