Error: Path to object does not exist at Request

Hi experts,

i have a scenario asynchronous/syncrhonous: file to rfc and get back response rfc to other file. I have 3 communication channel: 1 sender file, 1 receiver file, 1 receiver RFC. The communication channel sender file show the follow error:

Attempt to process file failed with com.sap.engine.services.jndi.persistent.exceptions.NameNotFoundException: Path to object does not exist at Request, the whole lookup name is localejbs/AF_Modules/Request/ResponseBean.

I do not understand how modules(AF_Modules/Request/ResponseBean) in adapter works, the documents that I have found I am not much has clarified, could someone please explain and tell me something's error?

very thanks,

regards