After submitted you can't edited. If you get any intimation from GSTN then you can edit it. or In case department ll be conduct pre-verification for your premises at the time the said it is wrong ward after you can solve the issue....
Yes. If department ask clarification or Notice for the date of commencement and ward related then you can edit that...
In my view But, ward related intimation can't raise now. Any AO ll be conduct pre-verification at the time of he find the mistake then he ll be raise the error related notice after you can change that.....