How To Fix E0781 - Segment & is already used in one extension

SAP Error Message - Details

• Message type: E = Error

• Message class: E0 - SAP EDI messages

• Message number: 781

• Message text: Segment & is already used in one extension

What causes this issue?

The segment &v1& is being used in an extension which has already been
combined with the basic type &v2&. Combining again would mean that the
segment would occur twice. This is not allowed.

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?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message E0781 - Segment & is already used in one extension ?

  The SAP error message E0781, which states "Segment & is already used in one extension," typically occurs in the context of SAP's data model extensions, particularly when working with the Business Partner (BP) or Customer/Vendor master data. This error indicates that the segment you are trying to use is already associated with another extension, which can lead to conflicts or inconsistencies in the data model.
  Cause:
  
  Segment Reuse: The segment you are trying to add or modify is already linked to another extension. In SAP, segments are often used to define specific attributes or characteristics of a data model, and reusing them across multiple extensions can lead to conflicts.
  Data Model Configuration: The configuration of the data model may not allow for the same segment to be used in multiple extensions simultaneously.
  Incorrect Extension Setup: There may be an issue with how the extensions are set up in the system, leading to this conflict.
  
  Solution:
  
  Check Existing Extensions: Review the existing extensions in your SAP system to see where the segment is already being used. You can do this by navigating to the relevant configuration area in the SAP GUI.
  Modify Extension Design: If the segment is indeed required in multiple extensions, consider redesigning your extensions to avoid conflicts. This may involve creating a new segment that captures the necessary data without reusing the existing one.
  Consult Documentation: Refer to SAP documentation or help resources for guidance on how to properly configure segments and extensions. This can provide insights into best practices and potential workarounds.
  SAP Notes and Support: Check for any relevant SAP Notes that might address this specific error or provide additional context. If necessary, consider reaching out to SAP support for assistance.
  
  Related Information:
  
  SAP Business Partner (BP): If this error occurs in the context of Business Partner data, ensure that you are familiar with the structure and configuration of Business Partner roles and attributes.
  Data Model Extensions: Understanding how data model extensions work in SAP can help you avoid similar issues in the future. Familiarize yourself with the concepts of segments, attributes, and how they relate to extensions.
  Transaction Codes: You may need to use specific transaction codes (like BP for Business Partner) to navigate to the relevant configuration areas in SAP.
  
  By following these steps, you should be able to resolve the E0781 error and ensure that your data model extensions are configured correctly.