Service Overview

One hub instead of five panels

The moment you start selling a product on your own site, on Trendyol, Hepsiburada and N11 (Turkey’s leading marketplaces) and on Amazon, your workload multiplies by the number of channels. A separate product listing, separate stock and a separate price in every panel; every morning orders are collected from five different screens, shipping labels are printed one by one, and in the evening stock levels are corrected by hand from Excel. In this setup the most expensive mistake is overselling: the last unit in the warehouse sells on two channels at once, one order is cancelled and your marketplace seller rating drops.

Marketplace integration brings all your sales channels together around a single "source of truth". Product information, stock and prices are sent from this hub to the marketplaces; orders are pulled from the marketplaces into the hub, and warehouse, shipping and accounting processes run from there. The hub can be your e-commerce site, your ERP or an integration panel set up for the purpose.

Who is it for?

Brands selling, or preparing to sell, on more than one marketplace: especially stores with hundreds of products or more and products with variants (colour/size).
Manufacturers and wholesalers with their own warehouse and ERP: companies that want to move into marketplace retail without disrupting their existing stock and invoicing processes.
Companies expanding to international marketplaces: exporters that need to manage stock held in Turkey and their prices under separate rules on international marketplaces such as Amazon.
Teams that cannot grow because of manual data entry: stores forced to hire more operations staff every time order volume rises.

If you are looking for general data exchange between systems, our API Integration page goes into more detail, and our ERP Integration page covers how orders reach your ERP. This page focuses on marketplace-specific problems.

Scope

Integration modules

Product and catalogue mapping

Mapping your own product codes to each marketplace’s category, brand and attribute structures, and reporting products that are missing mandatory fields.

Variant and image management

Converting variants such as colour and size into the grouping logic each marketplace expects, and sending images that meet size and count rules.

Central stock synchronisation

Stock deducted from one hub, multi-warehouse support, safety stock per channel and a history of stock movements.

Channel-based pricing rules

A price formula per channel based on commission and shipping costs, minimum price protection and temporary price lists for campaign periods.

Order collection and status flow

Pulling orders from every channel into one list, reporting approved, picking and shipped statuses back to the marketplace, and tracking cancellations and returns.

Shipping labels and tracking numbers

Generating labels through the marketplace’s contracted carrier or your own carrier agreement, and passing tracking numbers to the marketplace automatically.

ERP and accounting transfer

Orders reaching your ERP matched to customer and stock records, with e-Invoice/e-Archive invoices (Turkey’s electronic invoicing system) issued and the invoice details uploaded to the marketplace.

Error queue and monitoring

A visible error list with retries and notifications for rejected product submissions, failed stock updates and API rate limit breaches.

Process

How we set up the integration

01

Channel and data map

We define which marketplaces you will sell on and with which product groups, what the hub system will be and in which direction data will flow.

02

API access and test environment

API keys are obtained from the seller panels, work is done in a test environment wherever the marketplace offers one, and credentials are stored in a secure vault.

03

Catalogue mapping

Category and attribute mapping tables are prepared, and missing product information is reported and completed. This step is usually the most labour-intensive part of the project.

04

Synchronisation rules

The frequency of stock, price and order flows, safety stock, price formulas and behaviour in case of errors are defined.

05

Phased go-live

We go live with a limited product group first and monitor the whole flow from order to invoice, then transfer the full catalogue.

06

Monitoring and maintenance

Marketplaces change their APIs and category structures from time to time; these changes are tracked and the integration is kept up to date.

Comparison

Technical differences between marketplaces

API coverage and rules may be updated by the marketplaces; each channel’s current documentation is taken as the basis at the start of the project.
Marketplace	Integration method	Points to watch
Trendyol	REST API with credentials obtained from the seller panel	Mandatory category attribute fields, querying bulk operation results separately, campaign pricing rules
Hepsiburada	Seller APIs (listing, orders, shipping)	Matching to an existing catalogue product or creating a new one, managing listings and product content separately
N11	Seller API services	Category and attribute mapping, reporting order status transitions in the correct sequence
Amazon	Selling Partner API (SP-API)	ASIN matching, report and feed-based bulk operations, FBA / FBM stock separation, country-specific stores
Other channels (Çiçeksepeti, Pazarama, etc.)	Via the marketplace’s seller API or an integrator	API coverage varies by marketplace; assessed separately during discovery

Pricing and Delivery

A package or a custom integration?

Pricing

Of the e-commerce packages published on our site, the Enterprise package (₺6,310/month, excluding VAT) includes Trendyol, Hepsiburada and N11 marketplace integration; in the Platinum, Professional and Advanced packages, marketplace integration can be added as an option. For package contents and current terms, see the E-Commerce Packages and Pricing page.

For integrations built on an existing site, ERP or custom software, those that include additional channels such as Amazon, or those that require multiple warehouses and special pricing rules, a fixed-price proposal tailored to your project is prepared within 24 hours.

Deliverables

A working integration service or a configured integration module
Category and attribute mapping tables (editable later)
Documentation of channel-based pricing and stock rules
Error queue and notification setup
Hands-on training for the operations team

To speed up picking and dispatch in the warehouse, our Warehouse Management System (WMS) and Barcode and Handheld Terminal Integration services work together with this integration.

Sık Sorulan Sorular

We use both, depending on the need. For a standard store setup with a single warehouse, ready-made integration modules are a fast and economical solution. Where there are multiple warehouses, special pricing rules coming from your ERP, bundled products (sets/bundles) or a system you have built yourself, we develop a custom integration service on top of the marketplaces’ official APIs.

To prevent overselling, stock is held in one central place and every order is deducted from it instantly; up-to-date stock is then sent to all channels. To cover update delays in marketplace APIs, a safety stock can be set per channel (for example, taking the last few units off sale on a marketplace). Any remaining risk with simultaneous orders is handled by a cancellation rule.

Yes. Because commission rates, shipping agreements and campaign terms vary from channel to channel, pricing rules are defined per channel: adding a percentage or a fixed amount to the base price, applying a different margin by category, setting a minimum price floor and so on. When a rule changes, every product is repriced automatically.

Technically it is different. Amazon uses the Selling Partner API (SP-API); authentication, report-based bulk operations and catalogue matching (linking to an existing ASIN or creating a new listing) work differently from Trendyol and Hepsiburada. Amazon’s FBA (fulfilled from Amazon’s warehouses) and FBM (shipped from your own warehouse) models also change how stock flows. We model each of these differences separately in the project.

Yes, and this is where the real gain of the integration shows. Marketplace orders are transferred to your ERP or accounting software with customer, product and warehouse matching, and when an invoice is issued its details are sent back to the marketplace. For details of this flow, see our ERP Integration and e-Invoice and Accounting Integration pages.

Yes. Instead of an e-commerce site, the hub can be your ERP, your stock software or a lightweight product and stock panel built for the purpose. That said, if you are also thinking of opening your own store, Trendyol, Hepsiburada and N11 integration is included in our Enterprise e-commerce package and can be added as an option to the other packages.

Related Pages

Marketplace Integration