Consideration amount error on e-stamp paper

Dear Experts,

At the time of registry of a flat in Noida, the consideration amount in the E-Stamp paper has been mentioned as 0(Zero) by mistake. My queries are:

1. Can it be be rectified without any major expense?

2. If we attach a Stamp Paper worth Rs 100 with the proper consideration amount, is that admissible.

3. If registry is done with 0 consideration amount, will it cause problems in future resale of the property?

 Please help me out here.

Thanks in advance.