04 April 2012
NO,You can revise your ST-3 return once within 90 days after filing the original return, by clicking on Revise ST-3 option of Fill ST-3 submenu under RET menu.
Noted that:
On the successful submission of a return, an acknowledgement with a number in the format “registration number_Type of return_Month and Year of the return” will be shown. For example, for the ER-1 return filed for the month of December, 2009 by an assessee having registration no AAABC7865HXM001, the number “AAABC7865HXM001_ER1_122009” is generated as acknowledgement. This number becomes a reference number (Source Document number) for subsequent correspondences with the department in respect of the return.