Stadium: marketplace guide

About this guide

This is a ChannelEngine guide on the Norrköping-based marketplace Stadium. Here you can find information on how to request a Stadium account, how to configure this marketplace on ChannelEngine, what the specific requirements are, and more.

Table of contents

Commercial information

How to request an account

Associated costs

Marketplace features

Settings and configuration

Marketplace-specific requirements and exceptions

• Setup
• Categorization
• Mappings
• Pricing
• Listed products

FAQs

Commercial information

How to request an account

To start selling on Stadium, contact its team via email. If approved, you receive a registration link from one of its onboarding specialists.

Note that to become a seller on Stadium, you must have a legal entity registered with the European Union – both the warehouse and the office.

Associated costs

Stadium does not charge a setup fee, but it does charge a monthly fixed fee of EUR 40 and a commission fee of 20% on sales.

Marketplace features

* A marketplace that supports sales channels allows merchants to list and sell products across multiple markets (e.g.: countries, regions, and states), all from the same connection.

Settings and configuration

Setting up each channel on ChannelEngine follows the same flow, though not every channel includes the steps listed below.

1. Go through the Setup.
2. Create a Product selection.
3. Complete the Categorization.
4. Set up the Mappings: content, offers, and carriers.
5. Configure the Pricing: rules and currency conversion.
6. Fill in the Stock settings.
7. Finish the Activation.
8. Check the Listed products overview.

Marketplace-specific requirements and exceptions

Setup

On ChannelEngine

Connection

1. This channel is a Mirakl-based channel. Therefore, you connect to it with your Mirakl Connect SSO account. For more information on configuring Mirakl Connect SSO with ChannelEngine, check out the Mirakl-based channels: SSO authorization article.
2. If you would like to test the order flow with this plugin, contact the ChannelEngine Support team to configure the connection of your plugin to support testing. For more information on testing orders, check out the article ChannelEngine: how to create test orders.

Invoice uploads

To configure your invoice settings, go to Advanced settings. Then, select one option from the dropdown menu in the Enable invoice uploading field, which contains the following options:

• ChannelEngine invoices - when ChannelEngine receives a shipment, ChannelEngine automatically generates an invoice and attaches it to the shipment before exporting the shipment.
• Merchant invoices (optional) - when ChannelEngine receives a shipment, ChannelEngine exports the shipment – even if there is no invoice attached to it.
• Merchant invoices (required) - when ChannelEngine receives a shipment, ChannelEngine only exports the shipment if an invoice is attached to it. If not, you receive a notification.
• None - when ChannelEngine receives a shipment, ChannelEngine takes no action other than notifying you that no invoice is present.

If you select one of the Merchant invoices options, make sure to upload the invoice to ChannelEngine via the Merchant API or via the web interface. To learn more, check out the article ChannelEngine: upload merchant invoices.

Categorization

Categorization on Stadium is straightforward, and all categories are listed in English.

Mappings

Content

All products (required)

• Brand name - the product's brand. E.g.: Patagonia.
• Color - the product's color. E.g.: onyx.
• EAN - the product's unique identifier.
• Filter color - the product's filterable color. E.g.: black.
• Gender - the product's target gender. E.g.: women.
• Long description - the product's description in Swedish. The maximum number of characters is 3,999. The characters ™,&,*,|,® and " are not allowed.
• Main image - the product's main image. The requirements are:
  • File size - 10 MB.
  • Resolution - at least 800x800 px, and at most 2,500x2,500 px.
  • File format - PNG (transparent and uncompressed) is recommended, or JPG.
  • Background - transparent is recommended; gray (#f1f1f1) is accepted with JPG.
  • No models, the product needs to be showcased by itself and photographed from the front.
• Parent product ID - used to group product variations. If you are mapping a standalone, use the product's own SKU/Merchant product number.
• Product identifier - the product's internal identifier. On ChannelEngine, this is usually the Merchant product number.
• Product title - the product's title in Swedish. The maximum number of characters is 3,999. The characters ™,&,*,|,® and " are not allowed, and the product's brand is automatically added to the title.
• Size - the product's size. E.g.: S, UK 8, EU 42, etc.

The following required attribute is common to all Mirakl-based marketplaces:

• Export strategy - choose a strategy for exporting product data. You can select from the following export strategies:
  • Yes - export all product content to the marketplace, including the EAN (GTIN), category, and other mapped attributes. This option is ideal if you manage both product content and offers through ChannelEngine for the marketplace. Before you set this option, ensure that you map all required attributes.

  • No - do not export product content to the marketplace. Choose this option to keep the product content excluded from exports and only export the offers. This option is ideal if you do not want to export the product content yet, or you want to export only the product offers because the product content already exists on the marketplace.
     

    NB: the default export strategy is Yes, even if the Export strategy attribute is left unmapped.

All products (optional)

• Detail image 1-6 - the product's additional images, showing details of the product.
• Long description FI - the product's description in Finnish. The maximum number of characters is 3,999. The characters ™,&,*,|,® and " are not allowed.
• Model color ID - the ID of the product's color. E.g.: 681.
• Model image 1-6 - the product's additional images, worn by a model and photographed in a studio. Note that Model image 1 must show the model photographed from the front, and model images are only allowed for clothing. For the image requirements, check out Main image.
• Sales argument 1-9 - the product's highlights in Swedish. The first sales argument should mention the product's category. E.g.: Platta sömmar som motverkar skav (Flat seams that prevent chafing).
• Sales argument FI 1-9 - the product's highlights in Finnish. The first sales argument should mention the product's category.
• Supplier model ID - the product's manufacturer ID.
• Sustainable argument - the product's sustainable characteristic in Swedish. E.g.: Återvunnet material - minst 50% av produkten (Recycled material - at least 50% of the product).
• Sustainable argument FI - the product's sustainable characteristic in Finnish.

Offer

The only mandatory offer mapping is Price. This is your desired sale price, after (re)price rules are applied.

Optional

The following offer attributes are common to some Mirakl-based marketplaces:

• ECO #1-5 amount - the amount due for the eco-contribution related to the product. E.g.: 2.50.
• ECO #1-5 EPR category code - the extended producer responsibility (EPR) code that applies to the product. For a list of category codes, check out the article Providing data to comply with circular economy regulations in Mirakl's help center (note that you need to be logged in to Mirakl to access this page). E.g.: DE-WEEE, FR-DEA, etc.
• ECO #1-5 producer ID - your producer ID, received upon registering with a packaging register, such as Germany's LUCID. The maximum number of characters is 255.
• Category-specific ECO attributes - depending on your sales country, you might be required to map additional ECO attributes for products in specific categories. Review which ECO attributes to map within each category.

If pricing v2 is activated in your environment, you will see the following offer attributes, which are common to all Mirakl-based marketplaces:

• Allow promotion below min price - set to true to allow the promotion price to drop below your product's minimum price. To learn more, check out the article ChannelEngine: promotions.
• Strike price - the regular selling price. Use it in combination with your discount price to set up a discount/strikethrough pricing. To learn more, check out the Working with discounts section of this article. 
• Map your current selling price in Price in Pricing, Price rules. 
• Additionally, the Fee groups attribute appears in Mappings, Fee group mappings, if pricing v2 is activated. Map the marketplace fee group ID of the product there.  

The following offer attributes are also common to all Mirakl-based marketplaces:

• Discount start date - the date from which the product's sale price is valid, if applicable. Input the date as a fixed value. The date format is YYYY-MM-DD HH:MM:SS ZZ. All dates follow ISO month-day formatting, and all times follow 24-hour formatting in the UTC timezone. E.g.: 2026-10-25 15:30:00 +01 will start your discount on 25 October 2026 at 3:30 PM, one hour ahead of UTC time.
• Discount end date - the date until which the product's sale price is valid, if applicable. Input the date as a fixed value. The date format is YYYY-MM-DD HH:MM:SS ZZ. All dates follow ISO month-day formatting, and all times follow 24-hour formatting in the UTC timezone. E.g.: 2026-10-30 23:59:59 +01 will end your discount on 30 October 2026 at 11:59 PM and 59 seconds, one hour ahead of UTC time.
• Discount price - (appears only if you use pricing v1) the product's sale price, if applicable. This attribute must have a lower value than the Price attribute. 
• Discount quantity threshold - the minimum quantity required for the discount rate to be available.
• Leadtime to shipment - the number of days before you ship the product. You can create your own unique rules, if applicable. For more information on this, check out the article Lead time to ship in Mirakl's help center.
• Minimum quantity alert - map this attribute to receive a notification from Mirakl if your stock drops below the threshold defined.
• Offer state - the product's condition. Find your option from the dropdown menu by selecting the fixed value to apply to all.
• Product tax code - the taxation code applicable to the product.
• Logistic class - your optional shipping class. Make sure to map the shipping class using the marketplace’s codes and not with the labels that are visible in the partner portal's user interface. These codes vary per marketplace. If this marketplace makes use of logistic class codes, they can be found below.

Working with discounts

These instructions apply to most Mirakl marketplaces. If there are any exceptions on this marketplace, these are noted below. 

Pricing v1

• To set up a discount, map the Discount price, Discount start date, and Discount end date attributes. If you want to set a permanent discount, map the Discount end date attribute with a date in the far future instead of leaving it unmapped. Otherwise, the offer is not exported, and errors are shown on the Validation and feedback tab.
• The discounted price is only exported if it is lower than the base price.
• If you do not want to set a bulk discount, leave the Discount quantity threshold attribute unmapped.
• To set a bulk discount, the Discount quantity threshold must be set to a value higher than 1. For example, a value of 2 indicates that the buyer must purchase two or more products at the same time to benefit from the discount.

Pricing v2

1. To set up your strikethrough price, map the Strike price attribute to your regular price in Offer mappings. 
2. Then, indicate the discount period. Map the Discount start date and Discount end date attributes to indicate the start and end dates of your discount.
3. If you do not want to set a bulk discount, leave the Discount quantity threshold attribute unmapped. 
4. If you do not set up a bulk discount, set up your discount price:
   1. Go to Pricing, Promotions.
   2. Choose your discount method, e.g.: percentage discount, and configure the start and end dates.
   3. Select the products to which the discount is applied.
5. Keep in mind:
   • Your discount price and Strike price cannot have the same value. 
   • ChannelEngine only sets a discount if your discount price is lower than Strike price.
6. If set up correctly, your product displays a discount label and a strikethrough price on the channel.

Carrier

Carrier mapping is not required on Stadium. However, you can map your carrier to a specific list of carriers maintained by Stadium. This allows for working tracking links in the back-end, as well as for the buyer. If your default carrier is missing, please contact Stadium.

Pricing

Stadium requires prices to be submitted in EUR for Finland and SEK for Sweden. If you do not have pricing attributes in these currencies, you need to set a currency conversion.

Listed products

If you have problems with products not appearing on Mirakl-based marketplaces – especially if you are trying to create products, check the Listed products page for more information. Use the Channel status filter or the Validation and feedback tab to view all known errors for specific products.

If you see either of the below statuses, refer to the article ChannelEngine: why is my product listed as 'Product not found' in the inventory report?:

• Product not found in inventory report
• Product not in offer file

Products that ChannelEngine has failed to export are shown as Invalid, e.g.: products with an empty GTIN or that do not yet exist on the marketplace.

Alternatively, download the error report generated by Mirakl. To do so:

1. Log onto the Mirakl platform and go to Catalog, Product imports.
2. Identify the latest report and click the See details button.
3. Download the CSV file Non-integrated products report.

FAQs

How often does each task run on Mirakl-based marketplaces?
By default, Mirakl-based marketplaces follow the schedule below:

Can I map attributes on ChannelEngine and on the Mirakl platform?
No. Mapping attributes on the Mirakl marketplace platform interferes with ChannelEngine's content export. Therefore, it is recommended to categorize and map content only on ChannelEngine.

Why am I not receiving feedback on my content and/or offer exports?
Chances are that you are receiving the feedback. However, different types of error reports can take a couple of hours or several days to be generated:

• Offer feedback
  • Error reports are mostly generated automatically and are imported quickly.
• Content feedback
  • Transformation error report - this is automatically generated, and usually imported within a maximum of one day.
  • Conventional error report - this requires a manual review by the Mirakl-based marketplace, and not all do so. It can take several days for this report to be imported.

Note that the previous feedback report is not removed from ChannelEngine until both the latest transformation and the conventional reports have been fully processed by ChannelEngine. If there are no errors to report, no new reports are generated.