How To Fix E0804 - An error occurred reading the structure of segment '&'

SAP Error Message - Details

• Message type: E = Error

• Message class: E0 - SAP EDI messages

• Message number: 804

• Message text: An error occurred reading the structure of segment '&'

What causes this issue?

The system is inconsistent. The segment &v1& does not have any fields.

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?

Please 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 E0804 - An error occurred reading the structure of segment '&' ?

  The SAP error message E0804, which states "An error occurred reading the structure of segment '&'", typically occurs in the context of IDoc processing. This error indicates that there is an issue with the structure of a specific segment in the IDoc, which can prevent the IDoc from being processed correctly.
  Causes:
  
  Missing or Incorrect Segment Definition: The segment definition may not exist in the system, or it may have been modified or deleted.
  Inconsistent Data: The data being processed may not conform to the expected structure, such as missing mandatory fields or incorrect data types.
  Version Mismatch: There may be a mismatch between the IDoc version being used and the segment definitions in the system.
  Transport Issues: If the IDoc structure was recently transported from another system, there may have been issues during the transport process.
  Custom Segments: If the segment is a custom segment, it may not be properly defined or activated in the system.
  
  Solutions:
  
  Check Segment Definition: Verify that the segment definition exists in the system. You can do this by using transaction WE30 (IDoc Types) or WE31 (Segment Types) to check the segment structure.
  Validate IDoc Data: Use transaction WE19 (Test Tool for IDocs) to simulate the IDoc processing and check for any inconsistencies in the data being sent.
  Check for Modifications: If the segment has been modified, ensure that the changes are consistent and that all necessary fields are defined correctly.
  Review Transport Logs: If the issue arose after a transport, check the transport logs for any errors or warnings that may indicate problems with the segment definition.
  Activate Segments: If the segment is custom, ensure that it is activated in the system. You can do this in transaction SE11 (Data Dictionary) by checking the segment type.
  Consult Documentation: Review any relevant documentation or notes from SAP regarding the specific IDoc type and segment in question.
  
  Related Information:
  
  Transaction Codes:
  
  WE30: IDoc Types
  WE31: Segment Types
  WE19: Test Tool for IDocs
  SE11: Data Dictionary
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific IDoc type or segment.
  Debugging: If necessary, you can debug the IDoc processing to get more detailed information about where the error is occurring.
  
  By following these steps, you should be able to identify and resolve the issue causing the E0804 error in SAP.