How To Fix EA735 - The segment must start with <&1 SEGMENT="1">

SAP Error Message - Details

• Message type: E = Error

• Message class: EA - IDoc Basis Messages

• Message number: 735

• Message text: The segment must start with <&1 SEGMENT="1">

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message EA735 - The segment must start with <&1 SEGMENT="1"> ?

  The SAP error message EA735, which states "The segment must start with <&1 SEGMENT="1">," typically occurs in the context of Electronic Data Interchange (EDI) or IDoc processing. This error indicates that the system expects a specific segment to start with a certain identifier, but it does not find it in the expected format.
  Cause:
  
  Incorrect Segment Structure: The IDoc or EDI message being processed does not start with the expected segment. This could be due to a formatting issue or an error in the data being sent or received.
  Data Corruption: The data might be corrupted or improperly formatted, leading to the system not recognizing the starting segment.
  Mapping Issues: If you are using a mapping tool (like SAP PI/PO), there might be an issue with how the segments are being mapped or transformed.
  Version Mismatch: There could be a mismatch between the expected version of the IDoc or EDI format and the one being processed.
  
  Solution:
  
  Check the IDoc/EDI Structure: Verify that the IDoc or EDI message starts with the correct segment as defined in the relevant IDoc type or EDI standard. Ensure that the first segment matches the expected format.
  Validate Data: Use tools to validate the data being sent or received. Ensure that it adheres to the expected structure and format.
  Review Mapping Configurations: If you are using middleware for mapping, check the mapping configurations to ensure that they are correctly set up to transform the data as needed.
  Test with Sample Data: If possible, test with known good sample data to see if the error persists. This can help isolate whether the issue is with the data being sent or with the configuration.
  Check for Updates: Ensure that your SAP system is up to date with the latest patches and updates, as there may be fixes related to EDI/IDoc processing.
  
  Related Information:
  
  IDoc Types: Familiarize yourself with the specific IDoc type you are working with, as each type has its own structure and expected segments.
  SAP Documentation: Refer to SAP's official documentation for EDI and IDoc processing for more detailed information on segment structures and error handling.
  Transaction Codes: Use transaction codes like WE02 (IDoc display) or WE19 (IDoc test) to analyze the IDocs and troubleshoot the issue further.
  Error Logs: Check the application logs (transaction SLG1) for more detailed error messages that might provide additional context for the issue.
  
  By following these steps, you should be able to identify the cause of the EA735 error and implement a solution to resolve it.