How To Fix APPLG408 - MUX: Graphics proxy sending the event is unknown

SAP Error Message - Details

• Message type: E = Error

• Message class: APPLG - Application Graphics Messages (Graphic Proxy Framework)

• Message number: 408

• Message text: MUX: Graphics proxy sending the event is unknown

What causes this issue?

The multiplexer received an event from a sender which is not registered
with the multiplexer.

How to fix this error?

Check the call method. Check that a multiplexer reference is passed to
the graphics proxy, with which it can then register.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message APPLG408 - MUX: Graphics proxy sending the event is unknown ?

  The SAP error message APPLG408 with the description "MUX: Graphics proxy sending the event is unknown" typically occurs in the context of SAP GUI for Java or when using SAP's graphical user interface in a web environment. This error indicates that the system is unable to identify the graphics proxy that is sending an event, which can lead to issues in rendering or processing graphical elements in the application.
  Causes:
  
  Network Issues: There may be network connectivity problems that prevent the graphics proxy from communicating properly with the SAP server.
  Configuration Errors: Incorrect configuration settings in the SAP GUI or the backend system can lead to this error.
  Version Mismatch: Using incompatible versions of the SAP GUI or the backend system can cause communication issues.
  Corrupted Installation: A corrupted installation of the SAP GUI or related components can lead to unexpected behavior.
  Session Timeout: If the session has timed out, the graphics proxy may not be