We've all been there - address structures can be unpredictable, and you need to output them in a consistent format... The following ABAP code sample allows you to take the ADRC structure, put them into some kind of priority, split into a table, ignore the blank lines, and then concatenate into the final target field...
types: begin of tty_addr,
addrline type char255,
end of tty_addr.
data: t_addrlines type table of tty_addr,
w_addrlines type tty_addr.
data: w_adrc type adrc.
select single * from adrc into w_adrc where ADDRNUMBER = l_adrnr.
check sy-subrc = 0.
concatenate w_adrc-name_text
w_adrc-street
w_adrc-city1
w_adrc-STR_SUPPL1
w_adrc-STR_SUPPL2
w_adrc-STR_SUPPL3
w_arc-POST_CODE1
w_arc-POST_CODE2
w_arc-POST_CODE3
"Whatever fields MIGHT be populated from ADRC...
into l_DispatchAddress separated by '<&,>'.
split l_DispatchAddress at '<&,>' into table t_addrlines.
clear l_DispatchAddress.
loop at t_addrlines into w_addrlines.
if w_addrlines is not initial.
concatenate l_DispatchAddress w_addrlines-addrline into l_DispatchAddress separated by ', '.
endif.
endloop.
