Raw text from an invoice image is not enough for a CA desk. Before you post numbers into books, run a short verification checklist — the same ideas Accie OCR automates in its extraction quality layer.
1. Line items vs total
Sum extracted lines (and taxable value) and compare to the stated grand total. Allow a small tolerance for GST rounding — exact-match only checks create false alarms.
2. Tax arithmetic
Check subtotal × rate ≈ tax, and subtotal + tax ≈ total. Sanity-check the rate against known GST slabs (0%, 5%, 12%, 18%, 28%). A wild rate is often an OCR misread.
3. GSTIN format
Validate structure and checksum in code. Format validation does not replace knowing whether a GSTIN is active, but it catches many misreads early.
4. QR / IRN when present
For e-invoices with a QR, compare signed embedded values to OCR fields. Where they disagree, the signed QR payload is the stronger signal.
5. Export only after review
Flagged documents deserve a human glance. Clean ones can flow to CSV/XLSX or an API consumer. That is the workflow Accie OCR is built around.