Odoo 18 Oman Qpay Integration

My Odoo 18 e-commerce site is already heavily customised and now needs to accept “Buy-Now-Pay-Later” payments through Oman Qpay’s BNPL gateway. I can grant full Administrator access, so you will be able to install extra modules, adjust existing ones, and work directly in the production database once we are confident everything is stable.

The core objective is a seamless checkout flow that hands shoppers off to Oman Qpay, returns them to the store, and records the resulting order and payment status in Odoo without breaking any of my current custom logic. This includes:

• Building or modifying an Odoo payment acquirer module that speaks to the latest Oman Qpay BNPL REST endpoints.
• Handling all callback/webhook requirements so installment schedules, approvals and rejections are reflected instantly in the sales order and accounting modules.
• Providing clear, step-by-step deployment notes so I can reproduce the setup on staging and future versions.

I will test with live sandbox credentials and expect clean, readable Python code that follows Odoo’s module conventions. Once the gateway runs smoothly in staging we will schedule a short live-site switchover during an agreed maintenance window.