Malaysia's LHDN MyInvois mandate requires every sales document to be transformed into a validated UBL 2.1 e-invoice, submitted through the MyInvois API, and stamped with a unique identifier and validation QR code. Business Central core does not speak MyInvois, and the SST (Sales & Service Tax) regime needs tax codes, exemption handling and statutory reporting that the standard Malaysian functionality does not fully cover.

This is a build-to-order extension, not an instant AppSource download. ECOSIRE builds the app in AL as a per-tenant extension (or a private AppSource-style package where you prefer), then installs and configures it directly on your Business Central Online or on-premises environment. You receive working software on your tenant, configured to your company setup, chart of accounts and document flows.

The extension ships table and page extensions over Sales Invoice, Sales Cr. Memo and posted documents; an event-subscriber pipeline that builds the MyInvois UBL payload on posting; an OAuth2-secured HTTP client that submits to the LHDN MyInvois API and polls validation status; and a job queue entry that retries failed submissions and processes consolidated e-invoices for B2C aggregation. SST tax codes map to BC's VAT posting setup, and statutory data is exported in the formats LHDN expects.

Everything is delivered with permission sets, a configuration page, telemetry to Application Insights, and AL/Power Platform integration points so MyInvois status flows into Power BI or Dataverse if you need it. Because it is built for your tenant, edge cases — multi-company, foreign-currency invoices, self-billed scenarios — are handled against your real data during UAT rather than guessed at.