Selling on Newegg while running Dynamics 365 Business Central usually means two disconnected worlds. Orders are rekeyed from Seller Portal into sales orders, available quantities drift until an oversell forces a cancellation and a seller-performance hit, tracking numbers are pasted into Newegg by hand within the shipping SLA, and month-end reconciliation turns into a spreadsheet exercise where a settlement payout has to be matched back to hundreds of order lines, commission charges, shipping credits and refunds. Business Central is very good at the ERP half of that — items, locations, sales orders, warehouse shipments, posted invoices, bank reconciliation — but it ships with no Newegg awareness at all: no Newegg order source, no marketplace SKU mapping, no fee ledger, no place to record which payout settled which posted document.

We build that missing layer as a proper AL extension for your tenant. Newegg's Seller API is called from codeunits behind a Newegg Setup page holding the seller ID, secret key and marketplace/currency configuration, with credentials stored in isolated storage rather than in a table field. Incoming orders land first in a staging table so a malformed or partially-mapped order is quarantined and visible instead of failing silently; a mapping table translates Newegg seller part number and Newegg item number to Business Central Item No. and variant, and marketplace order status is mapped onto your document flow so an unshipped order becomes a sales order, a voided order becomes a cancellation, and a partially-shipped order does not re-import. Stock and price synchronization runs the other way: event subscribers on item ledger and reservation activity, plus a delta queue, publish available-to-promise quantities and price updates so the listed quantity reflects what your locations can actually ship, not the raw on-hand figure. Listing export builds Newegg's category and attribute payload from item card fields, item attributes and a per-category template you control.

On the outbound side, posting a warehouse shipment or sales invoice raises a shipment confirmation to Newegg with carrier, service level and tracking number, so the SLA clock is satisfied by the same act that posts the document — no second system to remember. Settlement is where most sellers get the largest return: we pull the settlement report, break it into order-level revenue, commission, shipping and refund components, and generate reconcilable general journal or cash receipt journal entries against your configured fee and clearing accounts, with each line carrying the Newegg order number so the posted entries reconcile to the bank deposit. Everything runs unattended through job queue entries you can schedule per company, with a retry policy and error log so a Newegg API outage produces a readable failure record rather than a gap in your data. The extension ships with its own permission sets, is built against current Business Central release waves, and targets SaaS online tenants (as a per-tenant extension or an AppSource-packaged app) or on-premises deployments; API pages (REST API v2.0 / OData v4) are exposed so Power Automate, Dataverse or your own reporting can read the sync state.

This is a build-to-order product, not an AppSource download. Nothing is pre-built and waiting: you request a quotation, we run a scoping call, and we write the specification around your actual catalogue, locations, fee accounts, tax setup and Business Central version. From confirmed scope, typical delivery is one working week — longer if the scope includes multi-company, multi-warehouse allocation logic or a non-standard third-party fulfilment integration, and we say so before you commit rather than after. You receive the AL source code for the version we build, a staging deployment for UAT before anything touches production, and a support window after go-live.