A valid GST invoice must contain specific details. These include:
Supplier details, GSTIN, invoice number, date
Recipient details, HSN/SAC, taxable value, tax rate, and place of supply
Missing or incorrect details can invalidate your invoice and lead to compliance issues. For businesses covered under e-invoicing, the invoice is valid only after the IRN is generated and the QR code is issued.
Failure to comply can result in invoices being treated as invalid under GST law.