How To Fix CNV_PE_IF027 - Only own table fields are expected on the left side of comparison

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE_IF - Messages for interface and interface mapping handling

• Message number: 027

• Message text: Only own table fields are expected on the left side of comparison

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE_IF027 - Only own table fields are expected on the left side of comparison ?

  The SAP error message CNV_PE_IF027 indicates that there is an issue with a comparison operation in a conversion or migration process, specifically within the context of the SAP Conversion Tools or Data Migration processes. This error typically arises when the system encounters a comparison that involves fields that are not part of the own table being processed.
  Cause:
  The error occurs when:
  
  A comparison is made between fields from different tables or between a field from the current table and a field from another table.
  The left side of the comparison is expected to contain only fields from the current table being processed, but it includes fields from other tables or structures.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review the Code/Logic: Check the logic where the comparison is being made. Ensure that the left side of the comparison only includes fields from the current table.
  
  
  Modify the Comparison: If the comparison is necessary, consider restructuring the logic to ensure that both sides of the comparison are valid. This may involve:
  
  Using joins to bring in necessary fields from other tables if needed.
  Ensuring that the fields being compared are from the same context.
  
  
  
  Check Data Mapping: If this error arises during a data migration process, review the mapping of fields to ensure that they are correctly aligned with the source and target tables.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific conversion or migration tool you are using. There may be specific guidelines or best practices that can help you avoid this error.
  
  
  Debugging: If you have access to debugging tools, you can step through the code to identify exactly where the error is occurring and what the values of the fields are at that point.
  
  
  Seek Help from SAP Support: If the issue persists and you cannot find a resolution, consider reaching out to SAP support for assistance. They may have additional insights or patches that can help resolve the issue.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  Conversion Tools Documentation: Review the documentation for the specific conversion tools you are using, as they may have specific requirements or limitations regarding field comparisons.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the CNV_PE_IF027 error and implement a solution to resolve it.