HI,for monitoring

i have a scenario for idoc 2 jdbc

such as:

sender service: A

receiver service: B

i have done it successfully,but i was facing a doubt during monitoring.

i knew,message was transported from AE(sender)> IE-> AE(RECEIVER).

I want to find the trace that message was transported on the AE both outbound direction and inbound direction!

i have found my message on the inbound direction of AE using RWB.that was right i had thought as the following:

send service: A

receiver serviece : B

when i want to fine the message on the outbound direction of AE using RWB,

I can not find them.

subsequently,

i found them on the outbound direction of AE using RWB accidentally

but is the following:

send service: B

receive service: A

why? who can tell me?

thanks.