Apigee Gateway timeout

[rraghuna]

Hello,

We have an application flow where in the request comes to Apigee and Apigee does a passthrough to our Apache webserver(Target endpoint) . We have some requests that would take around 8-10 minutes to serve a response to the user . We are getting the below error within one minute

{
   "fault": {
      "faultstring": "Gateway Timeout",
      "detail": {
           "errorcode": "messaging.adaptors.http.flow.GatewayTimeout"
       }
    }
}

 I tried the below configuration. But still not working. 

https://docs.apigee.com/api-platform/troubleshoot/runtime/504-gateway-timeout#slowbackendserver

I see there are two things router timeout & MP timeout.  How do i specify both router & MP timeout so that Apigee doesnot timeout within 10 mins before getting the response from target server.??