This is a build-to-order Microsoft Dynamics 365 Business Central extension that connects your posted sales documents to the Egyptian Tax Authority (ETA) e-invoicing and e-receipt platform. ECOSIRE engineers it in AL as a per-tenant extension installed directly on your BC online or on-premises environment — there is no instant AppSource download, and we never ask you to leave Business Central to key invoices into a portal.

When a sales invoice, credit memo, or e-receipt is posted, an event subscriber assembles the ETA-mandated JSON document, maps your items and tax codes to GS1 and EGS product codes, applies the correct tax subtype and unit-of-measure mapping, and digitally signs the payload (CAdES) using your HSM, USB token, or signing-service integration. The signed document is submitted to the ETA API, the returned UUID and submission status are written back onto the BC document, and a job queue entry polls ETA for clearance, rejection, or validation errors so your finance team sees live status without touching the portal.

We deliver table and page extensions (UUID, ETA status, submission timestamp), a dedicated ETA Setup page, ETA-specific permission sets, retry and resubmission actions, and a submission log for audit. The extension is built against the official ETA SDK and your registered company profile, configured with your taxpayer credentials, and tested end-to-end against ETA's environment before go-live.

Because it is built to order, the scope is tailored to your document types, branches, and signing method. ECOSIRE owns the build, the installation, and ongoing support — including ETA schema-version updates — under a maintenance arrangement. Honest lead times and a fixed one-time build price apply.