How To Fix /AIF/MES391 - Last component &1 of source struct. path is not equal to record type &2

SAP Error Message - Details

• Message type: E = Error

• Message class: /AIF/MES -

• Message number: 391

• Message text: Last component &1 of source struct. path is not equal to record type &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /AIF/MES391 - Last component &1 of source struct. path is not equal to record type &2 ?

  The SAP error message /AIF/MES391 typically occurs in the context of the Application Interface Framework (AIF) when there is a mismatch between the expected structure of a source data record and the actual data being processed. This error indicates that the last component of the source structure path does not match the expected record type.
  Cause:
  
  
  Data Structure Mismatch: The source data structure being processed does not conform to the expected structure defined in the AIF configuration. This could be due to:
  
  Incorrect mapping of fields.
  Missing fields in the source data.
  Incorrect data types or formats.
  
  
  
  Configuration Issues: The AIF configuration might not be set up correctly, leading to discrepancies between the expected and actual data structures.
  
  
  Versioning Issues: If there have been changes to the data structure or the interface definition, and the source data has not been updated accordingly, this error can occur.
  
  
  Solution:
  
  
  Check Data Structure: Review the source data being sent to the AIF. Ensure that it matches the expected structure defined in the AIF configuration. Pay special attention to the last component of the source structure.
  
  
  Review AIF Configuration: 
  
  Go to the AIF configuration settings and verify that the interface definitions, mappings, and data structures are correctly set up.
  Ensure that the record types and structures are correctly defined and that they match the incoming data.
  
  
  
  Data Mapping: If you are using mappings, check the mapping logic to ensure that all fields are correctly mapped and that there are no missing or incorrectly defined fields.
  
  
  Testing: Test the interface with sample data that conforms to the expected structure to ensure that the configuration is correct.
  
  
  Error Logs: Check the AIF error logs for more detailed information about the error. This can provide insights into which specific component is causing the issue.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to AIF for any known issues or additional troubleshooting steps.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance.
  AIF Documentation: Review the official SAP AIF documentation for best practices in configuring interfaces and handling errors.
  Community Forums: Consider searching or posting in SAP community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.