qRFC with inbound and outbound queues involves a processing and transfer model that works in three phases that are independent from each other.
qRFC with Outbound and Inbound Queue
In the first step, the application data is written in the database of the outbound queue.
In the second step, the QOUT Scheduler takes on the transfer of data from the database of the client to the database of the target system.
In the third step, the target system QIN Scheduler activates processing of the queue in the target system.