Telr Payment Gateway for Business Central is a build-to-order AL extension that wires Microsoft Dynamics 365 Business Central directly into Telr, the UAE/KSA-focused payment gateway. It is not an instant AppSource download — ECOSIRE builds it against your store/auth-key configuration, installs it as a per-tenant extension on your Business Central environment (cloud or on-prem), and supports it after go-live.

The extension adds a Telr Payment Setup page (store ID, auth key, test/live toggle, currency map) and surfaces "Pay with Telr" actions on Sales Orders, Posted Sales Invoices and the Customer card. When you generate a hosted payment page or pay-link, the extension calls the Telr Order API, persists the order reference against the BC document, and listens for Telr's IPN callback through a published OData/REST endpoint so settlement status flows back without manual polling.

Captured transactions are matched to open Customer Ledger Entries and posted via a dedicated payment journal batch, so your finance team reconciles by exception instead of re-keying. Card, Mada, and supported local wallets are accepted; recurring invoices reuse Telr card tokens (PCI scope stays with Telr); and 3DS2 / SCA challenge flows are handled by the hosted page. Multi-currency is honored across AED, SAR and USD using BC's own currency setup.

Architecturally it ships as clean AL objects — table/page extensions, event subscribers on posting routines, an HttpClient-based connector, a Job Queue entry for callback retries, and a scoped permission set. Telr secrets are stored using Business Central's isolated storage, never in plain fields. Where useful, payment status can be projected to Dataverse for Power Platform reporting. ECOSIRE delivers source, documentation, a sandbox validation pass, and an agreed support window.