Have you enabled e-Invoice here?
https://einvoice1.gst.gov.in/Home/Enablement
What is the company GSTIN showing in the invoice? what is the GST registration type?
Have you enabled e-Invoice here?
https://einvoice1.gst.gov.in/Home/Enablement
What is the company GSTIN showing in the invoice? what is the GST registration type?