How To Fix UMG156 - Conversion cannot be started.

SAP Error Message - Details

• Message type: E = Error

• Message class: UMG - Message Class for the Unicode Migration Tool.

• Message number: 156

• Message text: Conversion cannot be started.

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message UMG156 - Conversion cannot be started. ?

  The SAP error message UMG156 "Conversion cannot be started" typically occurs in the context of data conversion processes, such as when using the SAP Data Migration Cockpit or during data uploads. This error can arise due to various reasons, and here are some common causes, potential solutions, and related information:
  Causes:
  
  Missing Configuration: The necessary configuration for the conversion process may not be set up correctly.
  Authorization Issues: The user may not have the required authorizations to execute the conversion.
  Incorrect Data Format: The data being processed may not be in the expected format or may contain invalid entries.
  System Issues: There may be underlying system issues, such as performance problems or temporary outages.
  Incompatible Versions: The version of the tools or components being used may not be compatible with the current SAP system version.
  
  Solutions:
  
  Check Configuration: Ensure that all necessary configurations for the conversion process are correctly set up. This includes checking the settings in the Data Migration Cockpit or any related tools.
  Review Authorizations: Verify that the user executing the conversion has the appropriate authorizations. You may need to consult with your SAP security team to ensure the user has the necessary roles assigned.
  Validate Data: Review the data being uploaded or converted to ensure it meets the required format and does not contain any invalid entries. Use data validation tools if available.
  System Health Check: Perform a system health check to identify any performance issues or errors in the system logs that may be affecting the conversion process.
  Consult Documentation: Refer to the official SAP documentation for the specific tool or process you are using to ensure you are following the correct procedures.
  Contact SAP Support: If the issue persists, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error, including any relevant logs or screenshots.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error. SAP Notes often contain fixes, workarounds, or additional troubleshooting steps.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues. They may provide insights or solutions based on their experiences.
  Training and Documentation: Ensure that users involved in the conversion process are adequately trained and have access to the necessary documentation to perform their tasks effectively.
  
  By following these steps, you should be able to identify the cause of the UMG156 error and implement a suitable solution.