If you sell on two or more marketplaces, your day is spent reconciling systems that were never designed to talk to each other. Amazon, eBay, Shopify, Noon, Daraz, and your own store each push orders in different shapes, hold their own stock counts, and enforce their own price rules. ERPNext core gives you a solid Sales Order, Item, and Bin-level stock ledger, but out of the box it has no concept of a "channel" — no per-marketplace order inbox, no shared inventory pool with per-channel safety buffers, and no guard that stops two marketplaces from selling the last unit at the same time. Teams end up bolting on spreadsheets and manual CSV imports, and oversells, stale prices, and duplicate SKUs quietly eat margin.

ECOSIRE builds the Multichannel Order Hub as a proper Frappe app installed onto your ERPNext bench, not a fragile set of manual customizations. We add first-class DocTypes — Sales Channel, Channel Order, Channel Listing, Channel Inventory Buffer, and a SKU Conflict resolver — that sit natively inside ERPNext with their own list views, workspaces, permissions, and reports. A unified order inbox ingests orders from every connected channel, normalizes them, and creates the correct downstream Sales Order / Delivery Note / Sales Invoice with full traceability back to the originating marketplace order id. Inventory is managed as one central pool: hooks.py doc events on the Stock Ledger recalculate available-to-sell per channel, apply the buffer you configure for each marketplace, and trigger scheduled push-backs so a sale on one channel decrements availability everywhere before the next oversell can happen.

Technically, the app is engineered the way a Frappe engineer would expect. Channel connectors call each marketplace API and expose whitelisted methods (@frappe.whitelist()) that your own automations and the Frappe REST API can call. hooks.py doc_events fire on submit/cancel of Sales Order, Delivery Note, and Stock Entry to keep channel stock in lock-step; scheduler_events (cron and hourly/daily hooks) run the order pulls, price syncs, and buffer reconciliation as background jobs so nothing blocks the UI. Server scripts and validation enforce the overselling guard and de-duplicate incoming SKUs; client scripts add the in-form actions and channel dashboards your team works from daily. Role profiles and permission rules scope who can edit listings, approve price changes, or resolve conflicts, and everything is built for and tested against ERPNext / Frappe v15 and v16.

Because every seller's channel mix, pricing logic, and fulfillment flow differ, this is a build-to-order engagement, not a one-click marketplace download. We start with a short scoping call to confirm which marketplaces you run, how your SKUs and warehouses map, and what your pricing and buffer rules should be. We then build your version of the app, install it on a staging bench, run UAT with your real catalog, and only cut over to production once you sign off. Typical delivery is 2-4 weeks from confirmed scope, and you receive the full app source code and git repository so you are never locked in.