How To Fix E0766 - Segment & cannot be inserted as it would appear twice when combined

E0766 - Overview

• Message type: E = Error

• Message class: E0 - SAP EDI messages

• Message number: 766

• Message text: Segment & cannot be inserted as it would appear twice when combined

What causes this issue?

The segment &v1& cannot be inserted in the extension. It occurs in a
basic type with which the extension &v2& has already been combined.

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.

E0766 - Details

• The SAP error message E0766 indicates that a segment cannot be inserted because it would appear twice when combined. This typically occurs in the context of data processing or configuration in SAP, particularly when dealing with hierarchical data structures, such as in the case of master data or organizational structures.
  
  Cause:
  The error is usually caused by one of the following reasons:
  
  Duplicate Entries: The segment you are trying to insert already exists in the structure, and the system is preventing the insertion to avoid duplication.
  Incorrect Hierarchical Structure: The segment may be incorrectly defined in a way that it would lead to a circular reference or duplication when combined with existing segments.
  Data Integrity Rules: SAP has built-in data integrity rules that prevent the creation of duplicate or conflicting entries in certain contexts.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check for Existing Segments: Review the existing segments in the hierarchy or structure