Short GST charged.

shubham bansal (-) (46 Points)

30 June 2018  
I have wrong tax charge in earlier bill i.e 18% instead of 28%, should i have to raise Debit note for difference 10% ? while base amount has no changes. 

Pease guide how to put the same in gst portal in GSTR1.

GSTR 1 asks for Taxable Value.