How To Fix CNV_20000045 - Program must not be started until its predecessor is running

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20000 - Messages for fiscal year change

• Message number: 045

• Message text: Program must not be started until its predecessor is running

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 CNV_20000045 - Program must not be started until its predecessor is running ?

  The SAP error message CNV_20000045 indicates that a specific program or process cannot be started until its predecessor is running. This error typically occurs in the context of data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools.
  Cause:
  The error is caused by a dependency between two processes or programs. The program you are trying to start has a prerequisite that another program must be running first. This is often seen in scenarios where data needs to be processed in a specific sequence, and the system is enforcing that sequence to ensure data integrity and consistency.
  Solution:
  To resolve this error, follow these steps:
  
  
  Identify the Predecessor Program: Check the documentation or logs to identify which predecessor program needs to be running. This information may be available in the error message details or in the migration tool's logs.
  
  
  Start the Predecessor Program: Once you have identified the predecessor program, ensure that it is started and running. You may need to monitor its status to confirm that it is active.
  
  
  Check for Dependencies: Review the migration or conversion process to understand any other dependencies that may exist. Ensure that all required programs are running in the correct order.
  
  
  Consult Documentation: Refer to the SAP documentation related to the specific migration or conversion process you are using. This may provide additional insights into the required sequence of operations.
  
  
  System Logs: Check the system logs (transaction SM21) for any additional error messages or warnings that may provide more context about the issue.
  
  
  Restart the Process: After ensuring that the predecessor program is running, attempt to restart the program that generated the error.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM37 (Job Monitoring) to check the status of background jobs, and SM21 (System Log) for error logs.
  SAP Notes: Search for SAP Notes related to the specific migration or conversion process you are using. SAP Notes often contain solutions for known issues and best practices.
  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 problem persists after following these steps, consider reaching out to your SAP support team or consulting with SAP directly for further assistance.