How To Fix SAI_PROXY_PUBLIC004 - Exception class &1 not found

SAP Error Message - Details

• Message type: E = Error

• Message class: SAI_PROXY_PUBLIC - Message for proxy test environment

• Message number: 004

• Message text: Exception class &1 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 SAI_PROXY_PUBLIC004 - Exception class &1 not found ?

  The SAP error message SAI_PROXY_PUBLIC004 indicates that a specific exception class (denoted by &1) could not be found in the system. This error typically arises in the context of SAP's Application Interface Framework (AIF) or when dealing with proxy calls in SAP systems.
  Cause:
  
  Missing Exception Class: The specified exception class does not exist in the system. This could be due to a missing transport, an incomplete implementation, or a misconfiguration.
  Namespace Issues: The exception class might be in a different namespace that is not accessible or not properly defined in the current context.
  Transport Issues: If the exception class was recently transported from another system, it may not have been imported correctly or may be missing altogether.
  Development Errors: If the exception class was created in a development environment but not activated or properly defined, it could lead to this error.
  
  Solution:
  
  Check for Existence: Verify if the exception class exists in the system. You can do this by using transaction code SE24 (Class Builder) and searching for the class name.
  Transport Check: If the class is missing, check the transport logs to ensure that the transport containing the class was successfully imported.
  Namespace Verification: Ensure that the class is in the correct namespace and that your current user has the necessary authorizations to access it.
  Recreate the Class: If the class is missing and you have the definition, you may need to recreate it in the system.
  Activation: If the class exists but is not activated, activate it in SE24.
  Debugging: If you have access to the code that is throwing the exception, you can debug it to see where the exception is being raised and why it is not being found.
  
  Related Information:
  
  Transaction Codes: 
  
  SE24: Class Builder to check for the existence of the exception class.
  SE80: Object Navigator to explore related objects and dependencies.
  SE11: Data Dictionary to check for any related database objects.
  
  
  Documentation: Review SAP documentation related to AIF and exception handling for more context on how exceptions are managed in your specific implementation.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search for the error message or related keywords in the SAP Support Portal.
  
  If the issue persists after following these steps, consider reaching out to your SAP Basis or development team for further assistance.