Allegro Connector for Business Central

Key Features

Allegro REST API integration via OAuth2 (authorization-code and device flow), with token refresh handled inside a dedicated AL codeunit and credentials stored on the Allegro Setup page

Inbound order import: Allegro checkout-form orders pulled on a Job Queue schedule and posted as BC Sales Orders with mapped customer, currency, shipping method and tax

Offer and listing management: publish, update and end Allegro offers from BC, mapping Items to offer IDs with EAN/GTIN and category attributes

Two-way stock synchronization: event subscribers on Item Ledger / availability push live quantities to Allegro to prevent overselling

Price synchronization: changes to BC sales prices propagate to the linked Allegro offers, with a configurable markup or price-list mapping

Allegro Smart! shipping support with carrier and delivery-method mapping, plus tracking-number write-back to the Allegro order so buyers see fulfilment status

PL/EU VAT handling mapped to BC VAT posting groups: domestic 23/8/5/0%, OSS for cross-border B2C, and reverse-charge B2B

Per-tenant extension packaging (.app) installed on your environment, with a custom permission set scoping Allegro tables and pages

Idempotent sync with external-ID matching and an Allegro Sync Log table so re-runs never duplicate orders or offers

Job Queue entries for scheduled polling plus on-demand actions, with retry and error logging surfaced in BC

Sandbox-first build and testing against Allegro's test API before any production credentials touch your tenant

Optional Dataverse / Power Platform integration to surface order and offer data in Power BI and trigger Power Automate flows

AL automated tests (test codeunits) covering order mapping, VAT assignment and stock-push logic

Rate-limit-aware API client respecting Allegro request quotas with backoff to avoid throttling

Built to order, done for you

No DIY setup — a working app, built, installed and supported by ECOSIRE.

You order

Start with a one-time build price. We scope it with you at kickoff.

We build & install

ECOSIRE builds, configures and installs it on your Dynamics 365 Business Central.

Go live + support

You go live in about 2–4 weeks, with a post-launch support window.

About this Product

Allegro Connector for Business Central is a custom-built AL extension that closes the gap between Allegro's REST API and your Dynamics 365 Business Central environment. There is no instant AppSource download here — ECOSIRE engineers build the connector to fit your offer catalog, stock model, payment flows and Polish VAT setup, then install and support it on your tenant.

On the BC side the connector ships as a per-tenant extension (or, where you prefer, a registered AppSource-style app installed privately). It adds table and page extensions to Item, Sales Header/Line and Customer, an Allegro Setup page for OAuth2 credentials and mapping, and a set of codeunits that talk to the Allegro REST API. Inbound checkout-form orders are pulled on a Job Queue schedule and posted as Sales Orders with the right customer, shipping method and tax. Outbound, event subscribers on item and price changes push availability and pricing back to your Allegro offers so the marketplace never oversells.

It is honest about scope: Allegro's API quotas, sandbox testing, offer-status rules and Allegro Smart! delivery handling are all wired explicitly, with a tracking-number write-back so buyers see fulfilment in their Allegro account. VAT is handled per PL/EU rules — domestic 23%/8%/5%/0%, OSS for cross-border B2C, and reverse-charge B2B — mapped to your BC VAT posting groups.

Because it is built to order, we scope against your real data in a discovery call, develop in a sandbox, and hand over with a permission set, documentation and a job-queue runbook. Optional Dataverse / Power Platform sync exposes order and offer data to Power BI and Power Automate.

What you get

Signed AL extension package (.app) installed on your Business Central tenant as a per-tenant extension (sandbox first, then production)

Allegro Setup page configured with your OAuth2 credentials, offer mappings, shipping methods and VAT posting-group links

Custom permission set scoping the Allegro tables, pages and codeunits for least-privilege role assignment

Configured Job Queue entries for scheduled order import, stock and price sync

Technical and admin documentation: setup guide, field-mapping reference and a job-queue runbook

Source AL code handed to you (or retained under support), plus the AL test codeunit suite and a post-go-live support window

Who this is for

Allegro Seller on Business Central (PL/CEE)

A Polish or CEE merchant running Dynamics 365 Business Central who sells on Allegro and is tired of re-keying orders and manually adjusting stock. Needs orders, inventory and pricing to stay in lockstep automatically.

BC Finance / Accounting Lead

Owns VAT correctness and clean posting. Wants every Allegro order to land with the right PL/EU VAT posting group — domestic, OSS or reverse-charge — so JPK and VAT returns reconcile without manual cleanup.

IT / ERP Manager or BC Partner

Responsible for the tenant's extensions and integrations. Wants a properly packaged per-tenant AL extension with permission sets, job-queue runbook and tests — not a fragile script — and a single party accountable for support and updates.

How Allegro Connector for Business Central Compares

Criterion	ECOSIRE	Custom Build	Competitor
Allegro order import into BC Sales Orders	Included	Included	Partial support
Offer/listing publish and management from BC	Included	Partial support	Partial support
Two-way stock and price synchronization	Included	Partial support	Partial support
Allegro Smart! shipping mapping and tracking write-back	Included	Partial support	Partial support
PL/EU VAT handling mapped to BC VAT posting groups	Included	Partial support	Partial support
Built, installed and supported on your tenant for you	Included	Not included	Not included
Tailored to your catalog, shipping and tax setup	Included	Included	Not included
Packaged as a versioned per-tenant AL extension with permission set	Included	Partial support	Included

Frequently Asked Questions about Allegro Connector for Business Central

How long until the connector is live, and what's the process?

Typical delivery is 3 to 5 weeks from kickoff. We start with a discovery call to scope your offer catalog, stock model, shipping methods and VAT setup, then build and test the AL extension against Allegro's sandbox API. We install it on your BC sandbox for joint UAT, and only after sign-off do we connect production Allegro credentials and go live. Complex catalogs, custom shipping rules or Dataverse sync can extend the timeline; we confirm a firm date after discovery.

Is this an instant AppSource download?

No. This is a build-to-order extension. ECOSIRE develops it for your specific Business Central configuration, then installs it on your tenant as a per-tenant AL extension (or privately registered app). You are not buying a self-install AppSource listing — you are buying a built, installed and supported integration tailored to your data.

What ongoing support and updates do I get?

Every build includes a post-go-live support window for fixes and tuning. After that we offer a maintenance plan covering Allegro API changes (Allegro versions and deprecates endpoints), Business Central major-release compatibility (the twice-yearly waves), and adjustments as your offer or VAT setup evolves. Because we hold or share the source, updates ship as a new extension version without rebuilding from scratch.

Will it handle Polish VAT and OSS correctly?

Yes — VAT is a first-class part of the build. We map Allegro orders to your BC VAT posting groups: domestic Polish rates (23/8/5/0%), the EU One-Stop-Shop scheme for cross-border B2C, and reverse-charge for eligible B2B. The exact rules are configured against your chart of accounts during discovery so postings reconcile cleanly with your JPK and VAT returns.

What do you need from us to build it?

Admin access (or partner delegation) to a Business Central sandbox, an Allegro developer account with API application registered for OAuth2, a representative sample of your offers and orders, and your VAT posting-group and shipping-method setup. We handle the AL development, packaging, testing and installation; your team participates in UAT and approves go-live.