Clarification on Voluntary E-Invoicing

After voluntary enablement, you should generate IRNs for all B2B invoices to ensure they remain legally valid; selective generation is not recommended as it may lead to ITC denials for your other customers.

Thanks for your reply sir,

Sir for other small customers i'll file GSTR1 manually. Won't these invoices reflect in their GSTR2A?

Under Rule 48(4) of CGST Rules, the requirement is framed GSTIN-level, not invoice-level. Once your GSTIN is enabled, you are effectively behaving like a “notified person”. A B2B invoice without IRN (when your system is enabled and capable) can be questioned as non-compliant with Rule 48(4) intent. If you opt in voluntarily, be ready to fully transition your B2B invoicing to IRN-based e-invoicing. If your requirement is only for one customer, consider whether you can handle that via a workaround (like a separate GSTIN, if feasible) rather than partial adoption.