How To Fix UJ0_EXCEPTION121 - Failed to call function &1

SAP Error Message - Details

• Message type: E = Error

• Message class: UJ0_EXCEPTION - Basic Exception Messages

• Message number: 121

• Message text: Failed to call function &1

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 UJ0_EXCEPTION121 - Failed to call function &1 ?

  The SAP error message UJ0_EXCEPTION121, which states "Failed to call function &1," typically indicates that there was an issue when trying to execute a specific function module in the SAP system. This error can arise from various underlying causes, and resolving it often requires a systematic approach to identify the root cause.
  Possible Causes:
  
  Function Module Issues: The function module being called may not exist, may be incorrectly defined, or may have been deactivated.
  Authorization Issues: The user executing the function may not have the necessary authorizations to call the function module.
  Parameter Issues: Incorrect or missing parameters being passed to the function module can lead to this error.
  System Configuration: There may be configuration issues in the system that prevent the function from executing properly.
  Transport Issues: If the function module was recently transported from another system, there may be inconsistencies or missing dependencies.
  Runtime Errors: There could be runtime errors or exceptions occurring within the function module itself.
  
  Solutions:
  
  Check Function Module: Verify that the function module exists and is active. You can do this by using transaction SE37 (Function Builder) to check the status of the function module.
  Review Authorizations: Ensure that the user has the necessary authorizations to execute the function module. You can check this using transaction SU53 to analyze authorization failures.
  Validate Parameters: Review the parameters being passed to the function module. Ensure that they are correct and complete.
  Check Logs: Look at the system logs (transaction SLG1) or short dump analysis (transaction ST22) for any additional error messages or details that can provide more context about the failure.
  Debugging: If you have access, you can debug the function module to see where it fails. This can provide insights into what might be going wrong.
  Consult Documentation: Review any available documentation for the function module to ensure it is being used correctly.
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for assistance.
  
  Related Information:
  
  Transaction Codes: 
  
  SE37: Function Builder
  SU53: Authorization Check
  SLG1: Application Log
  ST22: Dump Analysis
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address known issues related to the specific function module or error message.
  Community Forums: Check SAP Community or other forums for similar issues reported by other users.
  
  By following these steps, you should be able to diagnose and resolve the UJ0_EXCEPTION121 error in your SAP system.