Businesses under Pakistan's FBR digital-invoicing mandate face a hard compliance wall that Odoo core does not address. When you post a customer invoice in native Odoo, account.move computes tax lines and generates a QWeb PDF — but nothing transmits that invoice to FBR's IRIS/e-invoicing endpoint, embeds the FBR invoice reference number (IRN) and QR code, or validates the buyer's STRN and NTN against registration status. There is no field to map a line to the correct provincial jurisdiction (SRB, PRA, KPRA, BRA) versus federal sales tax, no withholding-sales-tax logic on the payable side, and no structured extract that matches the Annex-C / sales-tax return format. Teams end up re-keying every invoice into the FBR portal by hand, which does not scale and invites penalties for late or non-compliant transmission.

ECOSIRE builds a dedicated Odoo module that closes this gap end to end. We extend account.move and account.move.line with the FBR-required fields (invoice type, buyer registration type, HS code, jurisdiction, IRN, QR payload) via models.Model inheritance, and add @api.depends compute methods that classify each tax line as federal or provincial and calculate withholding sales tax where the buyer is a withholding agent. On posting — or through a configurable automated action / ir.cron batch — the module authenticates to FBR's digital-invoicing REST API using your issued token, serializes the invoice to the mandated JSON schema, transmits it, and writes back the returned IRN and QR code onto the record so they render on a customized QWeb invoice report. STRN and NTN entered on res.partner are validated against FBR's online verification service, with results cached and surfaced as a status badge in the form view (XML/OWL).

Access is governed properly through ir.model.access.csv and record rules so that only authorized accounting and tax roles can transmit or void invoices, and every transmission attempt, response code, and error is logged for audit. We build a sales-tax return workspace that aggregates posted, FBR-accepted invoices into the return line structure (taxable value, output tax by rate and jurisdiction, input tax, withholding) and exports a reconciled dataset your filer can lodge against the FBR return — turning month-end from manual re-keying into a review-and-submit step. The module is delivered against the standard Odoo XML-RPC/JSON-RPC surface so external systems or a POS front end can trigger transmission programmatically.

Because this is build-to-order, nothing ships until we understand your exact registration profile. We start with a scoping call to confirm your Odoo edition (Community or Enterprise), version (17.0, 18.0, or 19.0), which provincial authorities apply to you, your withholding obligations, and your current FBR API credentials and sandbox access. We then develop against your requirements, validate in FBR's sandbox on a staging copy of your database, run UAT with your team, and deploy to production with a rollback plan. Typical delivery is 2–4 weeks from confirmed scope. You receive the full installable source, and we support it through go-live and beyond as FBR's schema and endpoints evolve.