calling RFC in background

I need to run the program that contains call function of other legacy system. Something like this:

CALL FUNCTION 'Z_GET_SUR02'

DESTINATION i_dest-rfcdest

EXPORTING

p_bname = c_rscuser

TABLES

p_usr02 = l_usr02 .

I guess it is not possible to run in background, is there any alternative?

Thannk you .