GST E Invoice Bill

within 24 hours you can delete it. or else you have to amend in GSTR1 filing

To Make amendment in Invoice

Click on 9A - Amended B2B Invoice Tile

Enter the Invoice No and period of invoice to amend
Then enter Revised Invoice Details like Date, Invoice details, GST Rate,
Taxable Value, Tax Amount, etc and click on save 

Difference amount of Tax you need to pay or reduce from your tax liability