can we show b2b bill for 2018-19 in Feb 20 or March 20 return and also pay the tax in the same month" if not what is the solution especially for showing B2B for them to reflect in gstr2A
You can not ammend anything now. As any amendments and rectification is allowed maximum upto in SEP 2019 - GSTRB for the following year closing the financial year or before filling of Annual Return whichever is earlier.