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

EA273 - Overview

• 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.

EA273 - Details

• 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