error "Maximum number of items in FI reached" and " A syytem error is oc

Hi All ,

When i am upload recived goods by using movement type 202 using bapi

bapi_goodsmovement_create and line item is around 1000 then i m getting error some times

"Maximum number of items in FI reached" and " A syytem error is occuring when locking "

plz tell what i have to do

thnx in advance