How To Fix RSHDB021 - Conversion time unknown. No successful conversion log found: &1

SAP Error Message - Details

• Message type: E = Error

• Message class: RSHDB - Messages in RSHDB

• Message number: 021

• Message text: Conversion time unknown. No successful conversion log found: &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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSHDB021 - Conversion time unknown. No successful conversion log found: &1 ?

  The SAP error message RSHDB021, which states "Conversion time unknown. No successful conversion log found: &1," typically occurs during the data conversion process in SAP, particularly when working with data extraction or data loading tasks. This error indicates that the system is unable to find a successful conversion log for the specified data object, which is necessary for tracking the conversion process.
  Causes:
  
  Missing Conversion Log: The conversion log for the specified data object may not exist or may have been deleted.
  Failed Conversion Process: The conversion process may have failed previously, resulting in no log being created.
  Incorrect Configuration: There may be issues with the configuration settings related to the data extraction or loading process.
  Authorization Issues: The user may not have the necessary authorizations to access the conversion logs.
  System Errors: There could be underlying system errors or inconsistencies in the database.
  
  Solutions:
  
  Check Conversion Logs: Verify if the conversion logs exist for the specified data object. You can do this by navigating to the relevant transaction or using the appropriate report to check logs.
  Re-run the Conversion: If the conversion process failed, try re-running it. Ensure that all prerequisites are met and that the data is in the correct format.
  Review Configuration: Check the configuration settings for the data extraction or loading process to ensure they are set up correctly.
  User Authorizations: Ensure that the user executing the process has the necessary authorizations to access the conversion logs and perform the conversion.
  Check for System Errors: Look for any system errors or inconsistencies in the database that may be causing the issue. You may need to consult with your SAP Basis team for assistance.
  Consult SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error message or provide additional troubleshooting steps.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may need to use specific transaction codes (like RSA1 for Data Warehousing, or others related to data extraction) to access logs or configuration settings.
  SAP Documentation: Refer to SAP Help documentation for detailed information on data conversion processes and error handling.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  
  If the issue persists after trying the above solutions, it may be beneficial to escalate the matter to SAP support for further assistance.