How To Fix WEBDYNPRO_RT021 - A request for server & was sent to server &. Note 1364846

SAP Error Message - Details

• Message type: E = Error

• Message class: WEBDYNPRO_RT - Message class of Web Dynpro runtime

• Message number: 021

• Message text: A request for server & was sent to server &. Note 1364846

What causes this issue?

A request, which was actually meant for server & has been sent to server
&.

System Response

The application has to be stopped here.

How to fix this error?

Check your network settings.
In particular, check that the proxy server, load balancer, or dispatcher
that is located between the browser and the back end is able to support
stateful SAP applications.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WEBDYNPRO_RT021 - A request for server & was sent to server &. Note 1364846 ?

  Certainly! Here's a detailed explanation regarding the SAP error message WEBDYNPRO_RT021 and the related SAP Note 1364846.
  
  SAP Error Message: WEBDYNPRO_RT021
  Message Text:
  A request for server & was sent to server &.
  
  Cause
  This error typically occurs in SAP Web Dynpro applications when there is a mismatch or inconsistency in the server handling the request. Specifically:
  
  The Web Dynpro runtime expects a request to be processed by a particular server instance, but the request is routed to a different server.
  This can happen in load-balanced environments where the session affinity (sticky sessions) is not properly maintained.
  It may also occur if the Web Dispatcher or the load balancer is not configured correctly, causing requests to be sent to different application servers than expected.
  Another cause can be related to the Web Dynpro application’s internal state or session handling, where the server ID in the request does not match the server processing the request.
  
  
  Solution
  
  
  Check Load Balancer / Web Dispatcher