Error While Uploding data from Excel File

I try to upload data directly from Xlfile to Internal table.I have used the foll function module

ALSM_EXCEL_TO_INTERNAL_TABLE

and it's working nicely when i run the program from R/3.

My Question is ,if i access the same program from ITS ,no record is uploaded .

Any help will be much appreciated .

Rgds,

J.