file to bapi scenarios

hi expects,

as i am using "bapi_po_create" in receiver side.in sender side i am using data type in which i am using vendor id,name,city,street,country,langu,poorganisation,pogroup,currency,materialno,materialtype as request datatype and for responedatatype i am keeping status.during i am not getting any error.but during output,it is not giving respone.what is the error and in runtime in is showing waiting.please provide some solution.