How To Fix EA273 - No entry in conversion table for external segment name &1

SAP Error Message - Details

• Message type: E = Error

• Message class: EA - IDoc Basis Messages

• Message number: 273

• Message text: No entry in conversion table for external segment name &1

What causes this issue?

The external segment name '&v1&' has arisen in an IDoc with a format
used before Release 4.0. An attempt was made to establish the internal
segment name for this. This failed. No entry found in the conversion
table.

System Response

This IDoc cannot be processed.

How to fix this error?

Please check whether an entry is missing in the conversion table for
segments or whether the segment is not yet defined in the system.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message EA273 - No entry in conversion table for external segment name &1 ?

  The SAP error message EA273 "No entry in conversion table for external segment name &1" typically occurs when there is an issue with the mapping of external segment names to internal segment names in the SAP system. This error is often related to the use of IDoc (Intermediate Document) processing, where the system is unable to find a corresponding entry in the conversion table for the specified external segment.
  Cause:
  
  Missing Conversion Table Entry: The most common cause is that there is no entry in the conversion table for the specified external segment name. This can happen if the IDoc type or message type is not properly configured.
  Incorrect Configuration: The configuration for the IDoc processing may be incomplete or incorrect, leading to the system not being able to find the necessary mappings.
  Custom Development: If there are custom segments or modifications in the IDoc structure, they may not have been properly defined in the conversion table.
  Transport Issues: If the IDoc configuration was transported from one system to another (e.g., from development to production), there may have been issues during the transport process.
  
  Solution:
  
  Check Conversion Table: Verify that the conversion table for the IDoc type in question contains an entry for the external segment name. You can do this by using transaction code WE30 (IDoc Types) or WE31 (IDoc Segments) to check the definitions.
  Maintain Conversion Entries: If the entry is missing, you may need to create or maintain the conversion entries. This can be done using transaction code WE42 (Maintain Conversion Table).
  Review IDoc Configuration: Ensure that the IDoc type and message type are correctly configured in the system. Check the settings in transaction WE20 (Partner Profiles) and ensure that the correct message types are assigned.
  Check for Custom Segments: If you are using custom segments, ensure that they are properly defined and that the conversion entries exist for them.
  Transport Check: If the issue arose after a transport, check the transport logs for any errors or warnings that may indicate issues with the IDoc configuration.
  
  Related Information:
  
  Transaction Codes:
  
  WE30: IDoc Types
  WE31: IDoc Segments
  WE42: Maintain Conversion Table
  WE20: Partner Profiles
  
  
  Documentation: Refer to SAP Help documentation for IDoc processing and configuration for more detailed guidance.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to this error message.
  
  By following these steps, you should be able to identify and resolve the issue causing the EA273 error message in your SAP system.