How To Fix IU574 - Table &: Conversion already started

SAP Error Message - Details

• Message type: E = Error

• Message class: IU - Incremental Conversion (ICNV)

• Message number: 574

• Message text: Table &: Conversion already started

What causes this issue?

There was an attempt to delete the table from the display.

System Response

This action is rejected by the system because the conversion was
already begun for the selected table.
Only those tables for which the conversion was not yet started can be
deleted from the display with the function used. These are marked with
@4L@ in the Table column.

How to fix this error?

The table conversion is continued.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message IU574 - Table &: Conversion already started ?

  The SAP error message IU574, which states "Table &: Conversion already started," typically occurs during the data conversion process in SAP, particularly when working with the SAP Upgrade or Migration processes. This error indicates that a conversion process for a specific table has already been initiated, and a new attempt to start the conversion for the same table is not allowed until the previous process is completed.
  Cause:
  
  Concurrent Conversion Attempts: The most common cause of this error is that there is already an ongoing conversion process for the specified table. This can happen if multiple sessions or processes are trying to convert the same table simultaneously.
  Incomplete Previous Conversion: If a previous conversion attempt was interrupted or did not complete successfully, the system may still consider the conversion as "in progress."
  Locking Issues: Sometimes, database locks or other system-level issues can prevent the conversion from being completed, leading to this error.
  
  Solution:
  
  Check for Active Processes: Use transaction codes like SM50 or SM66 to check for any active processes that might be running the conversion for the specified table. If you find any, you may need to wait for them to complete or terminate them if they are stuck.
  Review Logs: Check the logs related to the conversion process (e.g., using transaction SLG1) to identify any issues or errors that may have occurred during the previous conversion attempt.
  Restart the Conversion: If you determine that the previous conversion has indeed failed or is no longer running, you may need to restart the conversion process. Ensure that all necessary prerequisites are met before doing so.
  Database Locks: If the issue is related to database locks, you may need to resolve those locks before attempting the conversion again. This can involve checking for and releasing any locks that are preventing the conversion.
  Consult SAP Notes: Look for relevant SAP Notes that may address this specific error. SAP frequently updates its knowledge base with solutions for known issues.
  
  Related Information:
  
  SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance. They can provide more specific guidance based on your system configuration and the context of the error.
  Documentation: Review the official SAP documentation related to the upgrade or migration process you are performing, as it may contain specific instructions or considerations for handling conversion errors.
  System Backup: Always ensure that you have a backup of your system before performing major operations like upgrades or migrations, as this can help you recover in case of issues.
  
  By following these steps, you should be able to diagnose and resolve the IU574 error in your SAP system.