How To Fix CNV_OM021 - Missing task for link &1 -> &2 (&3)

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_OM - Messages for Objectbased Migration

• Message number: 021

• Message text: Missing task for link &1 -> &2 (&3)

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_OM021 - Missing task for link &1 -> &2 (&3) ?

  The SAP error message CNV_OM021, which states "Missing task for link &1 -> &2 (&3)," typically occurs in the context of data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that there is a missing task or mapping for a specific link between two entities or objects in the migration process.
  Cause:
  
  
  Missing Configuration: The error often arises when the migration configuration is incomplete or not properly set up. This could be due to missing entries in the mapping tables or configuration settings that define how data should be transformed or migrated from the source to the target system.
  
  
  Inconsistent Data Model: If the data model in the source system does not match the expected model in the target system, it can lead to missing tasks or links that are required for the migration.
  
  
  Custom Development: If there are custom developments or enhancements in the source system that are not accounted for in the migration process, it may result in missing tasks.
  
  
  Solution:
  
  
  Check Migration Configuration: Review the migration configuration settings in the SAP system. Ensure that all necessary mappings and tasks are defined correctly. This may involve checking the relevant customizing settings in the SAP system.
  
  
  Review Mapping Tables: Look into the mapping tables that are used for the migration process. Ensure that there are no missing entries for the links indicated in the error message.
  
  
  Consult Documentation: Refer to the SAP documentation for the specific migration scenario you are working on. This can provide insights into the required configurations and mappings.
  
  
  Use Transaction Codes: Utilize transaction codes like LTMC (for Migration Cockpit) or SIMG (for Implementation Guide) to check the migration objects and their configurations.
  
  
  Debugging: If the issue persists, consider debugging the migration process to identify where the task is missing. This may require technical expertise in ABAP or the specific migration tool being used.
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional guidance.
  
  
  Related Information:
  
  Migration Cockpit: Familiarize yourself with the SAP S/4HANA Migration Cockpit, as it provides tools and templates for data migration.
  Data Migration Best Practices: Review best practices for data migration in SAP, which can help prevent issues like this from occurring.
  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 continues after following these steps, it may be beneficial to reach out to SAP support for further assistance.