Practical articles to help you understand invoice information, integrations and common technical issues.
Records and reconciliation / 21 Oct 2026
Build an invoice evidence pack that connects sales records, submitted payloads, FBR responses, corrections and monthly tax reconciliation.
Read moreInvoice verification /
Learn what an FBR invoice number and QR code represent, how businesses should retain response evidence and what to check when verification fails.
Read moreRetail and POS /
Plan a reliable POS-to-invoice workflow for outlets, restaurants and multi-branch retailers without mixing sales capture with tax classification.
Read moreInvoice corrections /
Understand the 30 March 2026 FBR order on bona fide invoice mistakes, the seventy-two-hour window and controls needed before making a correction.
Read moreTroubleshooting /
Diagnose common seller, buyer, date, invoice type, sale type, HS code, rate and amount errors using the published API error catalogue.
Read moreTax mapping /
Learn why sale type, tax rate, SRO schedule, SRO item and sandbox scenario should be selected as a connected tax decision.
Read moreBuyer data /
A practical guide to buyer registration type, NTN/CNIC, name, province and address without treating validation shortcuts as legal advice.
Read moreRegistration and tokens /
Follow the official onboarding sequence from IRIS and integration-mode selection through technical details, sandbox scenarios and production access.
Read moreInvoice format /
Understand the seller, buyer, invoice and line-item fields that belong in a controlled sales tax and digital invoice workflow.
Read moreFocused topics covered by this page and its related digital invoicing, tax and business guidance.
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