How To Fix /AIF/MES126 - Corresponding provider class was not found

/AIF/MES126 - Overview

• Message type: E = Error

• Message class: /AIF/MES -

• Message number: 126

• Message text: Corresponding provider class was not found

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /AIF/MES126 - Corresponding provider class was not found ?

  The SAP error message /AIF/MES126 Corresponding provider class was not found typically occurs in the context of the Application Interface Framework (AIF) in SAP. This error indicates that the system is unable to find the specified provider class that is required for processing a particular interface.
  
  Cause:
  
  Missing Provider Class: The most common cause is that the provider class that is supposed to handle the interface is either not implemented or not activated in the system.
  
  Configuration Issues: There may be configuration issues in the AIF settings where the provider class is not correctly assigned to the interface.
  Transport Issues: If the system has recently undergone a transport of changes, the provider class may not have been included or properly transported.
  Development Errors: If the provider class was custom-developed, there may be errors in the code or it may not have been properly registered in the system.
  
  
  Solution:
  
  Check Provider Class: Verify that the provider class exists