Mistake in return

Parv Dhuria (CA) (28 Points)

12 April 2014  
I have filed return for A/Y 2012-13 on 31st March 2014 as it was a nil return. I filled form 4S but by mistake I also entered salary and uploaded the return with tax payable. After the return was uploaded i came to know about my error. Now ITR-V is showing tax payable. I have not sent signed ITR-V to bangalore yet. Is there any remedy?? Will the return be cancelled if I don't send ITR-V?? Please reply it is urgent.