How To Fix WP309 - Segment & does not exist in IDoc &

SAP Error Message - Details

• Message type: E = Error

• Message class: WP - Messages from POS interface

• Message number: 309

• Message text: Segment & does not exist in IDoc &

What causes this issue?

When this IDoc was processed, the system tried to access an IDoc
segment which does not exist.

System Response

The system cannot process the data.

How to fix this error?

This is probably a program error. Contact your system administrator.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WP309 - Segment & does not exist in IDoc & ?

  The SAP error message:
  WP309 Segment & does not exist in IDoc &
  typically occurs during IDoc processing, indicating that a particular segment expected in the IDoc structure is missing.
  
  Cause
  
  The IDoc processing logic (e.g., a function module, user exit, or standard processing routine) expects a specific segment to be present in the IDoc.
  However, the segment is not found in the IDoc data received or being processed.
  This can happen if:
  
  The IDoc was not generated correctly and the segment was omitted.
  The segment is optional but the processing logic incorrectly assumes it is mandatory.
  There is a mismatch between the IDoc type/version expected and the actual IDoc.
  The IDoc was modified or truncated during transmission.
  
  
  
  
  Solution
  
  
  Check the IDoc structure and data:
  
  Use transaction WE02 or WE05 to display the IDoc.
  Verify if the segment mentioned in the error message actually exists in the IDoc.
  Confirm the IDoc type and version (basic type and message type).
  
  
  
  Verify the IDoc type and version:
  
  Ensure that the IDoc being processed matches the expected basic type and version.
  If there is a mismatch, adjust the processing logic or regenerate the IDoc with the correct type.
  
  
  
  Review the processing logic:
  
  Check the function module or user exit that processes the IDoc.
  Confirm if the segment is mandatory or optional.
  If optional, modify the logic to handle the absence of the segment gracefully.
  
  
  
  Regenerate or correct the IDoc:
  
  If the segment is missing due to incorrect IDoc generation, fix the upstream process that creates the IDoc.
  For example, check the ALE distribution model, partner profiles, or the application generating the IDoc.
  
  
  
  Check for notes or SAP OSS messages:
  
  Sometimes SAP releases notes related to specific IDoc errors.
  Search SAP Support Portal for the error message or related symptoms.
  
  
  
  
  Related Information
  
  
  Transactions:
  
  WE02 / WE05 — Display IDocs
  WE19 — Test tool for IDocs (can be used to simulate and test IDoc processing)
  WE20 — Partner profiles (check IDoc settings)
  WE30 — IDoc type development (check segment definitions)
  WE31 — Segment editor (check segment existence)
  
  
  
  IDoc basics:
  
  An IDoc consists of segments arranged hierarchically.
  Each segment corresponds to a data structure.
  Missing segments can cause processing errors if the logic expects them.
  
  
  
  Common scenarios:
  
  Custom enhancements or user exits expecting segments that are not always present.
  Version mismatch between sender and receiver systems.
  
  
  
  
  If you provide the exact segment name and IDoc type/message type, I can help you with more specific guidance.