Speeding up RFC to XI

we have a process to load a SQL DB with our open enrollment records.

I have an outbound interface that generates the offers and calls an RFC to XI which populates to SQL DB.

During a mass load, it took 5-12 seconds per person to be loaded into SQL (each person has ~100 records).

I had been using just the

CALL FUNCTION 'XXXXX' DESTINATION v_dest

- i believe this is a Synchronous call - which we really don't need it to be.

How do I make it Asynchronous? by adding

IN BACKGROUND TASK

?

Is there such a thing as

IN PARALLEL TASK

? I couldn't find anything on that.

thanks,

robert.