How To Fix /AIF/IDOC_GEN_STR020 - &1 is not an extension of &2

SAP Error Message - Details

• Message type: E = Error

• Message class: /AIF/IDOC_GEN_STR -

• Message number: 020

• Message text: &1 is not an extension of &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /AIF/IDOC_GEN_STR020 - &1 is not an extension of &2 ?

  The SAP error message /AIF/IDOC_GEN_STR020 &1 is not an extension of &2 typically occurs in the context of the Application Interface Framework (AIF) when dealing with IDoc processing. This error indicates that there is a mismatch between the expected structure of the IDoc and the actual structure being processed.
  Cause:
  
  
  Structure Mismatch: The IDoc structure being processed (&1) is not recognized as an extension of the expected structure (&2). This can happen if:
  
  The IDoc type or message type is incorrectly configured.
  The IDoc structure has been modified or is not properly defined in the system.
  There is a version mismatch between the IDoc definition and the data being sent.
  
  
  
  Configuration Issues: The configuration in AIF or the IDoc settings may not be correctly set up to handle the specific IDoc type or message type.
  
  
  Data Issues: The data being sent may not conform to the expected structure, leading to validation errors.
  
  
  Solution:
  
  
  Check IDoc Definitions: Verify that the IDoc type and message type are correctly defined in the system. Ensure that the structure of the IDoc being processed is indeed an extension of the expected structure.
  
  
  Review AIF Configuration: 
  
  Go to the AIF configuration and check the settings related to the IDoc processing.
  Ensure that the mappings and transformations are correctly set up to handle the IDoc structure.
  
  
  
  Validate Data: Check the data being sent in the IDoc. Ensure that it adheres to the expected format and structure. You can use transaction WE19 to simulate the IDoc and see if it processes correctly.
  
  
  Check for Updates: If there have been recent changes to the IDoc structure or AIF configuration, ensure that all relevant components are updated and consistent.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to AIF and IDoc processing for any specific guidance or known issues.
  
  
  Debugging: If the issue persists, consider debugging the AIF processing to identify where the mismatch is occurring. This may involve looking at the logs and tracing the processing steps.
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  WE30 (IDoc Types)
  WE31 (IDoc Segments)
  WE20 (Partner Profiles)
  AIF Configuration (Transaction code may vary based on your SAP version)
  
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  
  
  Community Forums: Consider checking SAP Community forums or other SAP-related discussion platforms for similar issues and solutions shared by other users.
  
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.