How To Fix EA678 - Segment definition must contain at least one field. Data was not saved.

SAP Error Message - Details

• Message type: E = Error

• Message class: EA - IDoc Basis Messages

• Message number: 678

• Message text: Segment definition must contain at least one field. Data was not saved.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message EA678 - Segment definition must contain at least one field. Data was not saved. ?

  The SAP error message EA678, which states "Segment definition must contain at least one field. Data was not saved," typically occurs in the context of defining segments in the SAP system, particularly when working with IDoc (Intermediate Document) structures or similar data structures.
  Cause:
  This error arises when you attempt to save a segment definition that does not contain any fields. In SAP, a segment is a structured part of an IDoc or data structure that is expected to have at least one field defined within it. If you try to create or modify a segment without adding any fields, the system will trigger this error message.
  Solution:
  To resolve this error, you need to ensure that the segment definition includes at least one field. Here are the steps to do this:
  
  
  Access the Segment Definition:
  
  Go to the transaction code where you are defining the segment (e.g., WE31 for IDoc segment definitions).
  
  
  
  Edit the Segment:
  
  Open the segment that you are trying to save.
  
  
  
  Add Fields:
  
  Ensure that you add at least one field to the segment. You can do this by selecting the option to add fields and defining the necessary attributes (like field name, data type, length, etc.).
  
  
  
  Save the Changes:
  
  After adding the required fields, save the segment definition.
  
  
  
  Check for Additional Errors:
  
  If you still encounter issues, double-check that all mandatory fields are filled out correctly and that there are no other validation errors.
  
  
  
  Related Information:
  
  IDoc Structure: Understanding the structure of IDocs and how segments and fields are defined is crucial. Each segment can represent a specific part of the data being transferred.
  Transaction Codes:
  
  WE31: For creating and maintaining IDoc segment definitions.
  WE30: For creating and maintaining IDoc types.
  
  
  Documentation: Refer to SAP Help documentation for detailed information on IDoc processing and segment definitions.
  Testing: After making changes, you can test the IDoc to ensure that it is functioning as expected and that the segment definitions are correctly set up.
  
  By following these steps, you should be able to resolve the EA678 error and successfully save your segment definition in SAP.