How To Fix IST_EBS151 - Line &1 of IDoc &2 has an unexpected segment name

IST_EBS151 - Overview

• Message type: E = Error

• Message class: IST_EBS - Interface Between IS-T and External Billing System

• Message number: 151

• Message text: Line &1 of IDoc &2 has an unexpected segment name

What causes this issue?

The function module called can only process segments of a certain type.
The current document contains a segment type that cannot be processed.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

If the unknown segment type is an enhancement to the IDoc, you must
create a new function module.
If the unkown segment type is an error that occurred while the IDoc was
being created, the IDoc must be created a second time in the external
billing system.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message IST_EBS151 - Line &1 of IDoc &2 has an unexpected segment name ?

  The SAP error message IST_EBS151 indicates that there is an issue with the structure of an IDoc (Intermediate Document) being processed. Specifically, it states that line &1 of IDoc &2 has an unexpected segment name. This typically means that the IDoc contains a segment that is not recognized or expected based on the IDoc type definition.
  
  Cause:
  
  Incorrect IDoc Structure: The IDoc may have been generated incorrectly, leading to unexpected segment names.
  Version Mismatch: The IDoc might be using a version that is not compatible with the receiving system or the expected structure.
  Custom Segments: If custom segments have been added to the IDoc type, they may not be recognized by the receiving system.
  Data Corruption: The IDoc data may have been corrupted during transmission or processing.
  
  
  Solution:
  
  Check IDoc Structure: Verify the structure of the IDoc against the expected structure in the SAP system. You can use transaction WE60 to display the IDoc type and its