How To Fix UC066 - Check conversion rules for &1: segment &2

SAP Error Message - Details

• Message type: E = Error

• Message class: UC - FI/CO Data transfer: errors during transfer

• Message number: 066

• Message text: Check conversion rules for &1: segment &2

What causes this issue?

The conversion rules are incorrect.

How to fix this error?

Check the conversion rules.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message UC066 - Check conversion rules for &1: segment &2 ?

  The SAP error message UC066 "Check conversion rules for &1: segment &2" typically occurs in the context of data conversion or data transfer processes, particularly when working with IDocs (Intermediate Documents) or other data exchange formats. This error indicates that there is an issue with the conversion rules defined for a specific segment of the data being processed.
  Cause:
  
  Incorrect Mapping: The mapping between the source and target data structures may not be correctly defined. This can happen if the data types or lengths do not match.
  Missing Conversion Rules: There may be missing or incomplete conversion rules for the specified segment, which are necessary for transforming the data correctly.
  Data Format Issues: The data being processed may not conform to the expected format, leading to conversion failures.
  Configuration Errors: There could be configuration issues in the IDoc or data transfer settings that affect how data is converted.
  
  Solution:
  
  Check Conversion Rules: Review the conversion rules defined for the specified segment. Ensure that they are correctly set up and that all necessary mappings are in place.
  Validate Data: Check the data being processed for the segment in question. Ensure that it adheres to the expected format and data types.
  Adjust Segment Definitions: If necessary, adjust the definitions of the segments in the IDoc or data structure to ensure compatibility with the conversion rules.
  Debugging: Use transaction codes like WE02 or WE19 to analyze the IDoc and see where the conversion is failing. This can provide insights into what might be going wrong.
  Consult Documentation: Refer to SAP documentation or help resources for specific details on the conversion rules and how they should be configured for your particular scenario.
  
  Related Information:
  
  Transaction Codes: 
  
  WE02: Display IDoc
  WE19: Test IDoc
  WE20: Partner Profile
  
  
  IDoc Types: Familiarize yourself with the IDoc types and segments relevant to your data transfer process.
  SAP Notes: Check for any relevant SAP Notes that might address known issues or provide additional guidance on this error message.
  Community Forums: Consider searching or posting in SAP community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify and resolve the cause of the UC066 error message in your SAP environment.