Billin Invoices for OpenCart — Billin (TS Facturas) invoices and receipts from orders

Billin Invoices creates an invoice in the Spanish service Billin (TS Facturas) from an OpenCart order when the buyer gave a NIF, and a simplified receipt when not. The VAT key (IVA, IGIC or IPSI) is set on each line, discounts and shipping are reconciled to the order total and the PDF comes from Billin. In Pro a document is issued on a status and the payment is recorded in Billin. The Billin site names an integration with Shopify only; no connector for OpenCart was found. API access needs the Ilimitado plan.

What the free version does

A panel on the order page with the Create document button. A button in the settings creates the NIF field at checkout. A second click does not create a second document, a Billin outage puts the entry into a queue with a retry, and before a retry the module looks in Billin for a document with the order number as its reference, so an answer lost after the write does not give a duplicate invoice.

What Pro adds

A document on the chosen order status and the payment recorded in Billin on another status (or at once for orders paid at checkout). A repeated status does not create a second document.

How it works, step by step

1. Get your Billin credentials.
2. Enter them in the module and press the test button.
3. Place one test order.
4. Switch the automation on (Pro) when you are sure.

Under the hood

• The secret is encrypted and never shown in the settings.
• The Billin token renews itself.
• Languages: English, Spanish.

How to install

1. Extensions → Installer: upload the zip.
2. Extensions → Modules: install and open the module.
3. Module settings: the Client ID and Client Secret from the Integraciones section of Billin; the Save and check button.
4. Try one test order.

OpenCart 4.0.2 or newer is required. Do not rename the archive.