Issue with DAX?

In my screen shot 1 i have column named as "coins_artyp" which has value IXA and there are two amounts attached with it so i am able to get only 1056 amount i am not able to get the other amount.

I have created a calculated calculated column in power bi 

to get the amount using this:

SUMX(summarize(FILTER(ar_tran_room,( ar_tran_room[coins_artyp] = ar_tran_rcpt[artyp] )&& ar_tran_room[cono] = ar_tran_rcpt[cono] && ar_tran_room[resno] = ar_tran_rcpt[resno] && ar_tran_room[gl_period] = ar_tran_rcpt[svc_date] ),ar_tran_room[cono], ar_tran_room[resno], ar_tran_room[gl_period] , "_max" ,max(ar_tran_room[coins_amt])),[_max]) 

The above dax is working good for some residents but its giving some kind of anomaly for some of the residents. I am not able to figure out why this is causing issue