How To Fix CNV_10020645 - &1 &2: Proxy &3 in proxy &4 in field to be converted is undefined

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_10020 - Message class for package 10020

• Message number: 645

• Message text: &1 &2: Proxy &3 in proxy &4 in field to be converted is undefined

What causes this issue?

The field to be converted contains a proxy &V4& that refers to another
proxy &V3& that is undefined.

How to fix this error?

Define the proxy &V3& and its value using transaction CNV_10020_PROXYF.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_10020645 - &1 &2: Proxy &3 in proxy &4 in field to be converted is undefined ?

  The SAP error message CNV_10020645 typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that there is an issue with a proxy object in the conversion process, specifically that a field that is expected to be populated is undefined.
  Cause:
  
  Missing Data: The field that is supposed to be converted does not have a value in the source data. This could be due to incomplete data extraction or transformation.
  Mapping Issues: There may be a problem with the mapping of fields between the source and target systems. If the mapping is not correctly defined, the system may not know how to handle certain fields.
  Configuration Errors: Incorrect configuration in the migration cockpit or the data migration tool can lead to this error.
  Data Type Mismatch: The data type of the source field may not match the expected data type in the target field, leading to conversion issues.
  
  Solution:
  
  Check Source Data: Review the source data to ensure that all required fields are populated. If any fields are missing, you may need to fill them in or adjust your extraction process.
  Review Mapping Configuration: Go through the mapping configuration in the migration tool to ensure that all fields are correctly mapped. Make sure that the source fields correspond to the correct target fields.
  Adjust Data Types: Ensure that the data types of the fields in the source and target systems are compatible. If there are mismatches, you may need to adjust the data types or perform data transformations.
  Debugging: If the issue persists, consider enabling debugging or logging in the migration tool to get more detailed information about where the error is occurring.
  Consult Documentation: Refer to the SAP documentation for the specific migration tool you are using. There may be additional troubleshooting steps or known issues related to this error message.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on data migration issues.
  Community Forums: Look for discussions in SAP Community forums or other user groups where similar issues may have been addressed.
  SAP Support: If you are unable to resolve the issue, consider reaching out to SAP Support for assistance, providing them with the error message and context of the issue.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.