How To Fix /AIF/MES119 - No proxy class defined for interface &1 &2 &3

SAP Error Message - Details

• Message type: E = Error

• Message class: /AIF/MES -

• Message number: 119

• Message text: No proxy class defined for interface &1 &2 &3

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /AIF/MES119 - No proxy class defined for interface &1 &2 &3 ?

  The SAP error message /AIF/MES119 No proxy class defined for interface &1 &2 &3 typically occurs in the context of the SAP Application Interface Framework (AIF). This error indicates that there is no proxy class defined for the specified interface, which can prevent the system from processing messages correctly.
  Cause:
  
  Missing Proxy Class: The primary cause of this error is that the proxy class for the specified interface has not been generated or is not available in the system.
  Incorrect Configuration: The interface might not be properly configured in the AIF settings, leading to the system being unable to find the corresponding proxy class.
  Transport Issues: If the interface was recently transported from another system, the proxy class may not have been included in the transport request.
  Development Issues: If the interface was developed but not activated or generated correctly, it could lead to this error.
  
  Solution:
  
  
  Check Proxy Class Generation:
  
  Go to transaction SE80 (Object Navigator) and check if the proxy class exists for the specified interface.
  If it does not exist, you may need to generate it. This can typically be done using transaction SPRO to navigate to the AIF configuration and regenerate the proxy classes.
  
  
  
  Activate the Interface:
  
  Ensure that the interface is activated in the AIF configuration. You can do this in transaction AIF or through the relevant customizing settings.
  
  
  
  Check Configuration:
  
  Verify the configuration settings for the interface in the AIF. Ensure that all necessary parameters are set correctly.
  
  
  
  Transport Request:
  
  If the interface was transported, check the transport request to ensure that all necessary objects, including the proxy class, were included in the transport.
  
  
  
  Rebuild the Proxy:
  
  If the proxy class exists but is not functioning correctly, you may need to rebuild it. This can be done by deleting the existing proxy and regenerating it.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation for AIF for any specific steps or considerations related to your version of SAP.
  
  
  
  Related Information:
  
  Transaction Codes:
  
  SE80: Object Navigator
  SPRO: Customizing Implementation Guide
  AIF: Application Interface Framework
  
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  Community Forums: Consider checking SAP Community or other forums for similar issues and solutions shared by other users.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP Basis or development team for further investigation.