Error At BPM at Synchronous Response

Hi to every one,

I am working in a scinario where a IDOC is received in the XI, then i need to map it with an RFC which is synchronous and the response what i am getting form it i need to call another RFC call in another Business System and the Responses of both this RFC's i need to Create a IDOC..

I am have Designed and Configured and when i have started monitoring my XML messages i can see the Idoc is coming in to the XI and its is requesting the Response form the RFC...the mapping is completed fine in the Graphical View but the response is not coming back

and i am using the RFC and IDOC though Usage Dependencies

Is this makes any problem?

Thanks in advance

Amaresh