If your company was required to issue e-invoices from April 2021 but hasn't, you can start issuing them now for current transactions. However, you cannot generate e-invoices older than two days on the portal. Failure to issue e-invoices is an offence under GST, attracting penalties of 100% of the tax due or Rs. 10,000, whichever is higher, and could lead to denial of ITC for your customers.
23 July 2021
Issue e-invoice for April onwards now
And start issuing it on time. Otherwise it will result in penalty on you and denial of itc to your customer.
26 July 2021
As on IRN portal you can not issue E-invoice not older than 2 days on portal. however, you can start from current date on B2B invoice. if any assistance required please feel free to contact at info.scajassociates@gmail.com