Only original in section 139(1) please change section retry

Hi Everyone Please help,

I have just got msg from incometax department regarding some arthimatic mistake in calculation of ITR1...

as they suggested the way to make the correction under section 143(1)a...Hence i have corrected my mistake and trying to upload the revise tax..but iam getting issue as "only one original in section139(1) can be fiiled.Please change the section and retry"

Please help me in this...