Selling on Zalando: upload guide & common errors
zDirect, Tradebyte, Channable or direct API: the upload paths, the technical pitfalls, and how to fix the most common validation errors.
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A lot of advice on how to sell on Zalando is a few years old: "send an email and wait". The route is different today, the requirements are more precise, and the Connected Retail model is being wound down. This guide covers how it actually works, based on Zalando's official partner documentation and on what I see every time I bring a brand onto the platform.
This guide is for brands and retailers that want to sell their catalogue on Zalando. If you're a private person looking to resell used clothes, that's a different thing: Zalando Pre-owned, where you send in items bought on Zalando in exchange for a gift voucher. It isn't a sales channel for businesses.
If you're still deciding whether it's worth it, I wrote a separate piece on why selling on Zalando accelerates your brand instead of cannibalising your site. Here I assume the decision is made.
Zalando's Partner University lists three partnership models:
Zalando buys stock from you and resells it. You're a supplier: no order handling, but no control over pricing and presentation either.
The marketplace model: you sell, at your prices, on Zalando. You can ship from your own warehouse (self-fulfilment) or hand logistics to Zalando with ZFS, Zalando Fulfilment Solutions. The rest of this guide is about this model.
Built for physical stores selling their in-store stock on Zalando. According to German trade press (Schuhkurier, reported by Retail-News in April 2026), Connected Retail is being merged into a single partner model and is due to close by the end of June 2027. If you're starting today, I wouldn't start here.
There is no sign-up form on the partner portal. Entry to the Partner Program goes through a Zalando Sales Manager, who also works out your launch assortment with you. Before you sign, Zalando's documentation expects five decisions to be made:
In practice: the sooner you show up with these answers ready, the sooner onboarding starts. A brand that arrives with messy catalogue data and logistics still undecided loses weeks before the first article is even uploaded.
This is where most catalogues get stuck. I've covered it in two separate pieces: the ideal data structure for Zalando and the most common upload errors and how to fix them.
Once the contract is signed, Partner Program onboarding runs through these stages:
Activating your zDirect account (the partner portal), company profile, compliance details and market setup (contacts, carriers and VAT per country).
Your product data is mapped to Zalando's requirements, usually through your integrator: categories, attributes, materials, sizes.
Articles are uploaded and validated. Rejected ones come back with a status code to fix.
A final check, test orders on fulfilment quality, and your catalogue goes live.
Go-live isn't the finish line: Zalando scores every partner's operational performance, country by country, with its Customer Experience Model (CXM) KPIs, and runs random test orders. Cancellations, late shipments and untracked returns all weigh on your visibility.
For a fashion catalogue with thousands of SKUs, the realistic choice is almost always an integrator. The tool matters less than the quality of the data you feed it.
Zalando doesn't publish a Partner Program fee schedule: terms are in your contract. According to trade press, marketplace service fees became uniform for all partners from September 2026, with temporary reductions running to the end of 2027. Before you start, your per-SKU calculation needs:
If you haven't run that calculation product by product, you don't yet know whether a Zalando sale makes you money. And keep prices consistent with your own site: undercutting yourself on the marketplace starts a price war against your own brand.
"On Zalando, onboarding time is decided by your data, not by the platform. Brands that arrive with catalogue, logistics and documents ready go live in days. Everyone else sits in review for months."
There is no public sign-up form on the partner portal: entry to the Partner Program goes through a Zalando Sales Manager. What you can do is arrive ready, with markets, logistics, integration method and catalogue already worked out.
Yes: your company's VAT number, plus your warehouse's if it's in another country. ZFS also requires a German VAT number.
There's no public price list: fees are set in the Partner Program contract, and since September 2026 they're the same for all partners. Besides the commission, budget for logistics, free returns and your integrator.
ZFS takes logistics off your hands and opens up zDirect UI for small catalogues, but it requires a German VAT number and stock in Zalando's warehouses. Self-fulfilment keeps you in control of stock, but you have to meet the approved-carrier, parcel-document and operational KPI requirements.
Mostly it depends on the quality of your catalogue data. With data, sizes and images already compliant, uploading takes a few days. With data to fix, I've seen catalogues stuck for weeks or months.