How To Fix CNV20200249 - Performance optimization: ASSIGN to field (of domain) &1 failed

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20200 - Messages for development class CNV_20200

• Message number: 249

• Message text: Performance optimization: ASSIGN to field (of domain) &1 failed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV20200249 - Performance optimization: ASSIGN to field (of domain) &1 failed ?

  The SAP error message CNV20200249, which indicates a performance optimization issue related to the assignment to a field of a specific domain, typically arises during data migration or conversion processes. This error is part of the SAP Conversion and Migration tools, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
  Cause:
  The error message CNV20200249 usually occurs due to one or more of the following reasons:
  
  
  Data Type Mismatch: The data being assigned to a field does not match the expected data type or length defined in the domain. This can happen if the source data has different characteristics than the target field.
  
  
  Field Length Exceeded: The data being migrated may exceed the maximum length defined for the target field in the domain.
  
  
  Invalid Data: The data being processed may contain invalid characters or formats that are not acceptable for the target field.
  
  
  Performance Optimization Settings: The error may also be related to specific performance optimization settings in the migration process that are not compatible with the data being processed.
  
  
  Solution:
  To resolve the CNV20200249 error, you can take the following steps:
  
  
  Check Data Types: Verify that the data types of the source and target fields match. Ensure that the data being migrated conforms to the expected types.
  
  
  Validate Field Lengths: Ensure that the length of the data being assigned does not exceed the maximum length defined for the target field. If necessary, truncate or adjust the data accordingly.
  
  
  Data Cleansing: Review the data for any invalid entries or formats. Cleanse the data to ensure it meets the requirements of the target field.
  
  
  Adjust Migration Settings: If the error is related to performance optimization settings, consider adjusting these settings in the migration tool to see if it resolves the issue.
  
  
  Use Debugging Tools: Utilize SAP debugging tools or transaction codes (like SE80 or SE37) to trace the error and identify the specific data causing the issue.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes or updates related to this error message. There may be patches or recommendations provided by SAP.
  
  
  Testing: After making the necessary adjustments, re-run the migration process in a test environment to ensure that the error has been resolved.
  
  
  Related Information:
  
  SAP Notes: Look for specific SAP Notes related to CNV20200249 for additional guidance or patches.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit for best practices and troubleshooting tips.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered and resolved similar issues.
  
  By following these steps, you should be able to identify the root cause of the CNV20200249 error and implement a suitable solution.