fortax-gstr2b-reconciliationlisted

# GSTR-2B reconciliation Needs Python 3 and internet: runs `scripts/fortax.py` (the Fortax engine on ai.fortax.in; your file is processed and not stored). ## Two kinds of match, never mixed - **Match (the engine).** Same supplier GSTIN, document type and invoice number (zero padding and separators ignored), taxable value and tax within the tolerance (₹1 by default). Buckets: matched, mismatch, missing in 2B, missing in books, and "probable" (number written differently, same amounts). Every amount, total, count and 3B figure in its reply is the engine's. **Never add up, recompute or re-list them.** - **Judgement (you).** Only what the rules could not pair, and only from the pairs the engine hands you. ## Step 1 — the files - **Purchase register** for the month, .xlsx or .csv, from any accounting software (Tally, Busy, Zoho, an ERP, Excel): supplier GSTIN, supplier's invoice number (the supplier's number, not your voucher number), invoice date, document type (invoice / credit note / debit note), taxable value, IGST, CGST, SGST, cess. Rows with no supplier invoice number cannot match — list them for the CA to fix at source. - **GSTR-2B** for the same month and GSTIN. Look in the folder where the CA drops files and in `<Client>/<FY>/GST/<YYYY-MM>/` first. A file with "2B" in its name and this GSTIN or period is already there -> use it, skip the portal. ## Step 2 — getting 2B from the portal (only if no file) GSTR-2B for a month is generated on the 14th of