How To Fix STC_SC_TASKS121 - Single job execution not possible for multiple conversion pairs

SAP Error Message - Details

• Message type: E = Error

• Message class: STC_SC_TASKS - System Copy Task Messages

• Message number: 121

• Message text: Single job execution not possible for multiple conversion pairs

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message STC_SC_TASKS121 - Single job execution not possible for multiple conversion pairs ?

  The SAP error message STC_SC_TASKS121, which states "Single job execution not possible for multiple conversion pairs," typically occurs in the context of data migration or system conversion tasks, particularly when using the Software Update Manager (SUM) or the SAP S/4HANA Migration Cockpit. This error indicates that the system is trying to execute a job that involves multiple conversion pairs, which is not allowed in a single job execution.
  Cause:
  The primary cause of this error is that the system is attempting to process multiple conversion pairs in a single job execution. In scenarios where data needs to be converted or migrated, each conversion pair (source and target) may need to be handled separately to ensure data integrity and proper processing.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Job Configuration: Review the configuration of the job that is being executed. Ensure that it is set up to handle only one conversion pair at a time.
  
  
  Split the Job: If you have multiple conversion pairs, consider splitting the job into separate executions for each conversion pair. This may involve creating multiple jobs or tasks, each handling a single conversion pair.
  
  
  Review Documentation: Consult the SAP documentation related to the specific migration or conversion process you are working on. There may be specific guidelines or best practices for handling multiple conversion pairs.
  
  
  Use Transaction Codes: If applicable, use transaction codes like SCC1 (Client Copy) or SCC4 (Client Maintenance) to manage client-specific settings that may affect the job execution.
  
  
  Check for Updates: Ensure that your SAP system is up to date with the latest patches and updates, as there may be fixes or improvements related to job execution and conversion processes.
  
  
  Consult SAP Support: If the issue persists, consider reaching out to SAP Support for assistance. They can provide more detailed insights based on your specific system configuration and the context of the error.
  
  
  Related Information:
  
  SAP Notes: Look for relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can share their solutions.
  Documentation: Review the official SAP documentation for the Software Update Manager (SUM) or the specific migration tool you are using, as it may contain valuable information regarding job execution and conversion pair handling.
  
  By following these steps, you should be able to resolve the STC_SC_TASKS121 error and successfully execute your conversion tasks.