How To Fix CNV20200857 - &1 and &2 blank! Conversion rule for &3=&4 not applicable

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20200 - Messages for development class CNV_20200

• Message number: 857

• Message text: &1 and &2 blank! Conversion rule for &3=&4 not applicable

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV20200857 - &1 and &2 blank! Conversion rule for &3=&4 not applicable ?

  The SAP error message CNV20200857 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that there is an issue with the conversion rules defined for the data being processed. Specifically, it suggests that the conversion rule for the specified fields (&3 and &4) is not applicable, and the values for these fields are blank.
  Cause:
  
  Missing Conversion Rules: The conversion rules for the specified fields may not be defined in the migration settings.
  Blank Values: The source data may contain blank values for the fields that are expected to be populated during the conversion.
  Incompatible Data Types: The data types of the source fields may not match the expected data types in the target system.
  Configuration Issues: There may be configuration issues in the migration cockpit or the data mapping settings.
  
  Solution:
  
  Check Conversion Rules: Review the conversion rules defined for the migration. Ensure that there are appropriate rules for the fields in question. If necessary, create or modify the conversion rules to handle the data correctly.
  Validate Source Data: Check the source data for the fields that are causing the error. Ensure that they are populated with valid values and are not blank. If they are blank, determine if they should be populated with default values or if they can be skipped.
  Data Mapping: Ensure that the data mapping between the source and target systems is correctly configured. Verify that the data types and formats are compatible.
  Consult Documentation: Refer to the SAP documentation for the specific migration tool you are using. There may be additional guidelines or troubleshooting steps provided for this error.
  Testing: After making changes, perform a test migration with a smaller dataset to verify that the issue has been resolved before proceeding with the full migration.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit or the specific migration tool you are using for best practices and troubleshooting tips.
  
  If the issue persists after following these steps, consider reaching out to SAP support for further assistance.