How To Fix CNV_20000049 - Program must not be started because its successor has run already

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20000 - Messages for fiscal year change

• Message number: 049

• Message text: Program must not be started because its successor has run already

Successor activity "<ZK>Check conversion for dependence on
organizational units</>" has been executed therefore this activity
cannot be executed.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20000049 - Program must not be started because its successor has run already ?

  The SAP error message CNV_20000049 indicates that a specific program or process cannot be started because its successor has already been executed. This is typically encountered in the context of data migration or conversion processes, particularly when using SAP's Conversion Tools or Migration Cockpit.
  Cause:
  The error occurs when:
  
  A prerequisite program or step in a migration or conversion process has already been completed, and the system is designed to prevent the re-execution of certain steps that should only be run in a specific sequence.
  The program you are trying to run is dependent on the successful completion of a previous step, which has already been executed.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Execution History: Review the logs or execution history of the migration or conversion process to confirm which steps have already been executed. This can usually be done through transaction codes like SLG1 (Application Log) or specific logs related to the migration tool you are using.
  
  
  Identify Dependencies: Understand the sequence of the programs or steps involved in the migration process. Ensure that you are not trying to run a step that is meant to follow another that has already been completed.
  
  
  Revert Changes (if necessary): If you need to rerun a step that has already been executed, you may need to revert the changes made by the previous execution. This could involve:
  
  Deleting or resetting data that was migrated or converted.
  Using specific transaction codes or tools provided by SAP to undo the previous step.
  
  
  
  Consult Documentation: Refer to the official SAP documentation or guides related to the specific migration or conversion tool you are using. This can provide insights into the correct sequence of operations and any specific requirements.
  
  
  Contact SAP Support: If you are unable to resolve the issue through the above steps, consider reaching out to SAP Support for assistance. They can provide guidance based on the specific context of your migration or conversion process.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes that can help you monitor and manage migration processes, such as SLG1 for logs, SE38 for executing programs, and others specific to your migration tool.
  SAP Notes: Check for any SAP Notes related to the error message or the migration tool you are using. SAP frequently updates its knowledge base with solutions to common issues.
  Migration Cockpit: If you are using the SAP S/4HANA Migration Cockpit, ensure that you are following the recommended steps and guidelines provided in the Migration Cockpit documentation.
  
  By following these steps, you should be able to identify the cause of the error and take appropriate action to resolve it.