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

/AIF/MES119 - Overview

• 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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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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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