My SAP PI system version is 7.4 single stack.
I am using an RFC lookup to the backend S4 system in one of our GUI mapping. In the backend's FM, we use table parameter so that we can send multiple values at one call just like what posted in this blog. However, when we send multiple data, the backend only receive the first record. This has been proven from debugging at the backend side.
At first import of the FM to PI it works successfully. But after sometime (not sure what the trigger is), the backend it started to receiving only the first record. This problem is similar to what posted in this thread.