How To Fix E0751 - Segment type & is already used in & &

SAP Error Message - Details

• Message type: E = Error

• Message class: E0 - SAP EDI messages

• Message number: 751

• Message text: Segment type & is already used in & &

What causes this issue?

The segment &v1& is already being used in the &v2& &v3&.
A segment type can only occur once within a &v2&.

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?

Choose another segment or delete the segment with the same name which
already exists.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message E0751 - Segment type & is already used in & & ?

  The SAP error message E0751, which states "Segment type & is already used in & &," typically occurs in the context of the SAP system when dealing with IDoc (Intermediate Document) processing or when defining segments in the IDoc structure. This error indicates that the segment type you are trying to use has already been defined or is already in use in the specified IDoc type.
  Cause:
  
  Duplicate Segment Definition: The segment type you are trying to define or use has already been defined for the specified IDoc type. This can happen if you are trying to create a new segment with the same name as an existing one.
  Incorrect Configuration: There may be a configuration issue where the same segment is being referenced multiple times in the IDoc structure.
  Transport Issues: If you are transporting IDoc definitions from one system to another, there may be conflicts if the segment already exists in the target system.
  
  Solution:
  
  
  Check Segment Definitions: Go to the IDoc segment definitions in transaction WE31 (for segment types) or WE30 (for IDoc types) and verify if the segment type you are trying to use is already defined. If it is, you may need to modify your IDoc type to use the existing segment.
  
  
  Modify IDoc Structure: If you find that the segment is indeed already defined, consider modifying your IDoc structure to avoid using the same segment type again. You may need to create a new segment type if the existing one does not meet your requirements.
  
  
  Review Transport Requests: If this error occurred after a transport, check the transport requests to ensure that there are no conflicts with existing definitions in the target system.
  
  
  Consult Documentation: Review SAP documentation or notes related to IDoc processing and segment definitions for any specific guidelines or best practices.
  
  
  Check for Custom Developments: If there are custom developments or enhancements in your system, ensure that they are not causing conflicts with standard IDoc definitions.
  
  
  Related Information:
  
  Transaction Codes:
  
  WE30: IDoc Type Development
  WE31: Segment Type Development
  WE20: Partner Profiles
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  IDoc Documentation: Familiarize yourself with the IDoc architecture and how segments are defined and used within the SAP system.
  
  If the issue persists after following these steps, consider reaching out to your SAP Basis or development team for further assistance, as they may have more insights into the specific configurations and customizations in your environment.