indoc status 64

i m new to ale idoc n created 2 clients 800(sender system) and 810(reciever system)

all connections are well i got status message 03 and 30 and 01 and 12 in 800 .

in client 810 i m getting

status 64 "immediate processing not possible"

status 50 "idoc ready to transfer"

status 64 "incorrect parameter with call function"

sender system idoc is posted but at inbound error occurrs .. i check function everything is ok ..

we20 both the partner profile are active

how to solve error .. ?