How To Fix UGMD123 - An error occurred during the generation; see the log

SAP Error Message - Details

• Message type: E = Error

• Message class: UGMD - FIN Master Data: Messages

• Message number: 123

• Message text: An error occurred during the generation; see the log

What causes this issue?

An error occurred while generating the Data Dictionary.
For more detail, see the <DS:TRAN.UG_MD_GEN_LOG>Generation Log.</>

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message UGMD123 - An error occurred during the generation; see the log ?

  The SAP error message UGMD123 indicates that there was an issue during the generation process of a specific task, and it suggests checking the log for more details. This error can occur in various contexts, such as during the generation of reports, forms, or other outputs in SAP.
  Possible Causes:
  
  Data Issues: There may be inconsistencies or missing data in the underlying tables that the generation process relies on.
  Configuration Errors: Incorrect configuration settings in the SAP system can lead to generation failures.
  Authorization Problems: The user may not have the necessary permissions to execute the generation process.
  System Performance: If the system is under heavy load or if there are performance issues, it may lead to timeouts or failures during generation.
  Program Errors: There could be bugs or issues in the custom code or standard programs being executed.
  
  Solutions:
  
  
  Check the Log: The first step is to check the detailed log associated with the error. This log will provide specific information about what went wrong during the generation process.
  
  You can usually find logs in transaction codes like SLG1 (Application Log) or ST22 (Dump Analysis).
  
  
  
  Data Validation: Ensure that all required data is present and valid. Check for any inconsistencies in the data that might be causing the error.
  
  
  Review Configuration: Verify that all relevant configurations are set up correctly. This includes checking settings in the relevant modules or applications.
  
  
  User Authorizations: Ensure that the user executing the generation has the necessary authorizations. You can check this in transaction SU53 or by consulting with your security team.
  
  
  Performance Monitoring: If the system is experiencing performance issues, consider monitoring system resources and performance metrics. You may need to optimize the system or schedule the generation during off-peak hours.
  
  
  Debugging: If you have access to the development environment, you can debug the program to identify the exact point of failure.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error or provide patches.
  
  
  Contact SAP Support: If the issue persists and you cannot resolve it, consider reaching out to SAP Support for further assistance.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SLG1 (Application Log), ST22 (Dump Analysis), and SE80 (Object Navigator) for debugging.
  Documentation: Review SAP documentation related to the specific module or functionality you are working with, as it may provide insights into common issues and resolutions.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed.
  
  By following these steps, you should be able to diagnose and resolve the UGMD123 error effectively.