How To Fix SM320 - Application key ('TAB_KEY') is missing

SAP Error Message - Details

• Message type: E = Error

• Message class: SM - Address Definition/Administration

• Message number: 320

• Message text: Application key ('TAB_KEY') is missing

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 SM320 - Application key ('TAB_KEY') is missing ?

  The SAP error message "SM320 Application key ('TAB_KEY') is missing" typically indicates that the system is unable to find a specific application key that is required for certain functionalities within the SAP GUI or a specific transaction. This error can occur due to various reasons, including missing configuration, issues with the SAP GUI installation, or problems with the user profile.
  Causes:
  
  Missing Application Key: The application key ('TAB_KEY') is not defined in the system or is missing from the configuration.
  SAP GUI Issues: There may be a problem with the SAP GUI installation or configuration on the client machine.
  User Profile Issues: The user profile may not have the necessary authorizations or settings to access the required application key.
  System Upgrade or Patch: If the system has recently been upgraded or patched, it may have affected the availability of certain keys.
  
  Solutions:
  
  
  Check Configuration:
  
  Verify that the application key ('TAB_KEY') is correctly defined in the system. This may require checking the relevant configuration settings in the SAP system.
  You may need to consult with your SAP Basis or system administrator to ensure that the key is properly configured.
  
  
  
  Reinstall or Update SAP GUI:
  
  If the issue is related to the SAP GUI, consider reinstalling or updating the SAP GUI on the client machine. Ensure that you are using a version compatible with your SAP system.
  
  
  
  User Profile Settings:
  
  Check the user profile settings to ensure that the user has the necessary authorizations to access the application key. This may involve reviewing user roles and authorizations in transaction SU01.
  
  
  
  SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal. There may be specific notes addressing this issue, especially if it is related to a known bug or configuration issue.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance. Provide them with details about the error message and any steps you have already taken.
  
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like SM30 (for table maintenance) or SU01 (for user administration) to check configurations and user settings.
  SAP Documentation: Refer to the official SAP documentation for more information on application keys and their configurations.
  Community Forums: Check SAP community forums or discussion boards for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to diagnose and resolve the "SM320 Application key ('TAB_KEY') is missing" error in your SAP environment.