![](http://sigma.sigmaeplus.com/images/banner/62c7eb747f3a42.00979865.png)
E-Invoice Billing
The IRN under the new e-invoicing system can be defined as a unique identification number assigned to an invoice by the IRP.
This feature of e-invoicing ensures that the supplier does not upload or use the same invoice more than once.
By exporting the sales invoice in excel and import it in the E invoice login. you can get QR code from that and paste it in sigma.
https://www.youtube.com/channel/UCtKpSIaVPpdRnUkk5XDFkgQ