'field-transport’ Macro 
You use the field-transport macro to send all data accumulated by field-set calls to the ITS during PBO. The data is sent synchronously.
With the standalone ITS, this is automatically performed by the flow logic runtime.
In ABAP in the integrated ITS, the syntax could be as follows:
Syntax
loop at my_list into wa.
field-set 'MY_LIST-AIRLINEID' counter wa-AIRLINEID.
field-set 'MY _LIST-FLIGHTDATE' counter wa-FLIGHTDATE.
field-set 'MY _LIST-CITYFROM' counter wa-CITYFROM.
field-set 'MY _LIST-CITYTO' counter wa-CITYTO.
add 1 to counter.
endloop.
field-transport.