Dump error

Hi

Please can any one help me.

Actually this is an outbound interface, will be running to downlod the file . we are Schduling background job using t code SA38 it is giving dump eror "no receipient found" but file downloaded.

if i run the same programme with the variant using t code SM36 job completed and Results as i would expect.

pls can any one help me to fix the dump.

it would be great if any one explain the diffrence between SA38 and SM36

Thanks

Somashekara