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With this option, you can select the marketplace — Poland (allegro.pl), Czechia (allegro.cz), Slovakia (allegro.sk) or Hungary (allegro.hu). With that, you can read articles about rules applicable to a foreign marketplace in your default language. If you want to browse articles in a different language, click here.
Adding products to the Catalog
How to add a new product to the Catalog
If you do not find a product that compatible with item you want to sell, you can add it to the Allegro Product Catalog when listing your offers.
In the listing form, you can indicate the product with which you will combine your offer. Thanks to this, you can issue it faster, because we will complete the product parameters for you.
If you do not find a product that compatible with item you want to sell, you can immediately add it to the Allegro Product Catalog.
When you're a producer
You can give us your product information database. To do so, CONTACT US: brand-data@allegro.pl.
What to pay attention to when you want to add a new product
When you add a product to the Catalog, you co-create it and influence the quality of the data we display to buyers. Therefore , add in the product data correctly in the listing form.
In particular, pay attention to:
- category - select the category that best compatible with your product. This makes it easier for buyer to find exactly what they are looking for. If possible, do not list your Offers in category the Other category.
How to properly list the product
Well listed product is exactly described with parameters available in choosen category. Product name:
- is the same as category name, or
- fits to the assortment sold in this category.
Pay attention to the main use of the product you are selling, e.g. a massage candle is a candle and massage is its additional function. Determine whether the item is part of a set, accessory, or standalone device. Finally, check at what price the item you want to sell is available in other offers connected to this product.
- parameters - complete them in the Product on offer section. Thanks to the parameters, customers can make a well-considered purchase decision. In addition, in most categories, we automatically create a name for the product based on them.
Learn more about how to correctly complete the product parameters.
See in which categories the EAN parameter is mandatory
Providing the EAN parameter for the product is mandatory when listing an offer in selected categories. See the list
photos - they should best present the product you offer. Learn more about the product image policy .
description - may only refer to the features, properties and functions of the product. Here you can specify, for example, its color, material or weight.
What about the data you provide in the form
In accordance with article 5.5. of the Allegro Regulations , in the Allegro Product Catalog we may use all the information you provide about the product - such as logos, descriptions or photos.
- do not add a non-original product to the Catalog - we will reject it.
Currently, you will not be able to add items to the Catalog that you in category - for example, online courses or custom-made furniture.
How to add a new product to the Catalog
- Go to the listing form , enter the product name and click [Search].
- Click [continue without selecting a product] under the product suggestions. ![dlas62x]
(https://a.allegroimg.com/s1200/12e0a5/857892984cfea37cb4d8362fabbd "for s62x")
- Select the category in which you want to list list the offer. ![dlas32x]
(https://a.allegroimg.com/s1200/123e9c/df8d00fe42a18dd2742c44cc51c8 "for s32x")
- Add the remaining information in the form and click [List Item].
If you fill in the parameters correctly and add photos, we will automatically add a new product to the Catalog .
We constantly check the quality of data in the Catalog and the products it contains. If the product does not meet the conditions specified in the regulations , we will remove it from the Catalog and remove the Offers from it. We will let you know by e-mail. In the e-mail we will indicate what you need to correct in order to add the correct product to the Catalog.
When you cannot add a new product to the Catalog
You can add a maximum of 20,000 new products to the Catalog each month. Depending on the product's brand or the category you list your offer in, we may further limit this option.
In the listing form, you can select a product from the Catalog that you want to link your offer to. If you cannot find the product that matches your offer — you can add it to the Catalog immediately. However, you cannot do that in specific cases.
You cannot add new products to the Catalog if:
- you reach the limit of 20,000 new products per month
- you sell a product in select categories or of certain brands.
How many products you can add
You can add up to 20,000 new products to the Catalog each month. If you reach the limit, you will not add any new products:
- from a file
- through the listing form
- through the API.
We take into account each product you add — regardless of whether you do it while listing from the file, through the API, or the listing form.
We renew the limit on the 1st day of each month. On that day, you can add products to the Allegro Catalog again — until you reach the limit of 20,000 products added in a given month.
If you reach the limit and try to add new products while listing from the file — in the Reports tab, we will mark it as Unsuccessful or Partially successful. Once you download the report, next to the products exceeding the limit, you will see the following error message: The limit of created products has been reached.
If you need any help, contact us. We can help you check the current state of your limit, and in exceptional cases — add extra products or temporarily increase the monthly limit on your account.
In which categories there are further limitations
We have blocked the option to add new products for certain brands and categories. That applies to the offers you list through the form, the API, or from the file.
That way, you will not create duplicate products in categories in which:
- the Catalog contains the complete assortment, and we know that no new products will appear in that category or that the manufacturer has provided a total product database
- products are no longer developed or changed by manufacturers, such as older generations of game consoles or phone models.
- Download the list of categories — effective since August 21, 2023.
- Download the list of categories — effective since February 5, 2024.
- Download the list of categories — effective since April 2, 2024.
- Download the list of categories — effective since October 22, 2024.
- Download the list of categories — effective since October 31, 2024.
- Download the list of categories — effective since November 15, 2024.
- Download the list of categories — effective since December 3, 2024.
- Download the list of categories — effective since December 24, 2024.
- Download the list of categories — effective since April 28, 2025.
- Download the list of categories — effective since May 7, 2025.
- Download the list of categories — effective since May 23, 2025
- Download the list of categories — effective since May 30, 2025.
To list offers in those categories select the product from the Allegro Product Catalog or complete the parameters — we will suggest the product to which you should link the offer.
If we do not find a product to which you can link your offer, consider changing the category or brand.
Parameters on Allegro
Parameters describe the features of the product or service you are selling. With them, you can enter new products quicker — and customers can find them more easily. Learn why you should complete parameters correctly and how to do it.
What parameters are
Parameters describe the product's unique features. The more parameters you complete in an offer, the more information you provide to buyers about the product you are selling. This way, buyers will find exactly what they are looking for.
The most important parameters are:
- EAN (GTIN) code
- brand or manufacturer
- serial numbers and manufacturer's codes
- model.
Keep reading to learn more about each parameter and learn where to get information about them.
You can complete parameters when you list an offer: in the listing form , via the API, or from a file. Buyer will then see them on the Offer page, in the Parameters section:
Each parameter defines:
- the name of the feature that describes the product ― for example, color, depth, manufacturer's code
- the value assigned to that parameter ― for example, black or 60 cm.
Parameters should reflect the product features as well as possible. That is why they differ depending on the category where you list your offers. That means, if you list an offer in the Chairs subcategory, you will see different parameters than in the Electronics subcategory.
Why you should complete parameters
If you complete the parameters in your offer:
- buyers can filter the search results and find the desired product more easily
- it is displayed higher in Google search results ― providing the manufacturer's code parameter is essential
- they appear in Google search results — the link to your offer is more visible and it has more chances to attract a customer
- if the product you sell is featured in our Catalog, we will complete other parameters for you automatically. It will allow you to list the offer and start selling faster.
- we display the name of the product you sell correctly — in most categories, we automatically create the product name based on parameters
- you can link your offer to the Allegro Product Catalog.
Where you can find parameters
The manufacturer or distributor of the goods you sell will provide you with the details of the product, including its parameters. They are often listed on the packaging or in the manual. That will allow you to easily list offers and add new products to the Allegro Product Catalog.
You can find more tips in sections regarding specific parameters.
What an EAN (GTIN) is
EAN (GTIN) is a standardized and unique product ID that consists of digits. It consists of 8 to 14 digits — usually 13 digits in Europe. You can usually find it on the product's packaging — it can also be in the form of a barcode.
Before, the name of this parameter was EAN. You can find it under the name EAN (GTIN) (Global Trade Item Number) — a more up-to-date name used by the GS1 organization.
When you list an offer, you can enter the following formats of numbers:
- 8 digits (GTIN-8, ISSN-8)
- 10 digits (ISBN-10)
- 12 digits (UPC-A, GTIN-12)
- 13 digits (GTIN-13, ISBN-13, ISSN-13)
- 14 digits (GTIN-14).
How to get an EAN (GTIN)
The entity responsible for assigning EANs (GTINs) may be:
- manufacturer or supplier: a company that produces the product or commissions its production to another company and sells the product under its trade name (brand)
- importer or wholesaler: a company that produces the product or commissions its production to another company and sells the product under its trade name (brand) or a company that introduces changes to the product (for example, by changing its packaging)
- retailer: a company that commissions the product production and sells it under its trade name (brand).
If you need the EAN (GTIN) — start with contacting the manufacturer or supplier.
If you produce and sell products under your own brand — you can obtain EANs (GTINs) directly on the Polish website of the GS1 organization.
The numbers will appear in the GS1 database within 24 from the moment they are assigned to you. After that happens, you can add the new product to the Allegro Product Catalog yourself. We will check the GS1 database to verify whether the product’s GTIN (EAN) is correct. If you complete the parameters correctly and add images, we will automatically add the new product to the Catalog.
Information about the registration process, costs of particular packets, and EAN (GTIN) activation is available on the GS1 Polska organization website.
How we verify whether a given EAN (GTIN) is correct
To verify whether a given EAN (GTIN) is correct, we check its prefix.
Depending on the number of digits in the EAN (GTIN), the prefix consists of:
- GTIN-8 — the first 3 digits
- GTIN-12 — the first 2 digits
- GTIN-13 — the first 3 digits
- GTIN-14 — the first 4 digits.
We identify three groups of incorrect prefixes:
- Restricted Circulation Numbers ― the EAN (GTIN) is not unique and may be used internally by an organization or a company
- the prefix does not exist or has been booked
- the prefix is intended for the automatic handling of empty containers, for example, bottles or pallets.
A detailed list of incorrect prefixes is available on the GS1 website.
What the Brand/Manufacturer and Model parameters are
The Brand/Manufacturer parameter identifies the brand owner or the manufacturer of the product you sell.
Example
Product: sports shoes Brand: Allegro Model: Speed Flats 1 Brand Orange
If the buyer searches for Allegro shoes and uses only the term Speed, they will be shown different variants of the product — both in terms of type and shoe color. However, if they use the full name of the model — Speed Flats 1 Brand Orange — they will be shown one single type and color.
Example
Product: sports shoes Brand: Allegro Model: ALLEBUTY 3 SPEEDYALL WHITE/ORN/123
If the buyer searches for Allegro shoes and uses only the term Allegor shoes, they will be shown different variants of the product — both in terms of type and shoe color. However, if they use the full name of the model — ALLEBUTY 3 SPEEDYALL WHITE/ORN/123 — they will be shown one single type and color.
How to report missing values in specific parameters
When you list an offer and complete the parameters, you can select the name of the brand, manufacturer, or model from a drop-down list. If the name you are looking for is not on the list, go to the Report a missing parameter value tab and complete a special form. In the form, provide:
- category — you can add up to 10 in one request
- parameter
- missing value — for example, the name of the brand
- link confirming that the value exists — for example, to the manufacturer's website
- attachments — for example, photos of the product with the brand or model visible.
We will review your request and let you know about our decision by email.
What the Manufacturer's code or Serial number is
The manufacturer's code is a unique number given by a manufacturer to their products to distinguish them. It is a sequence of letters, numbers, and characters of various lengths. It can also be named MPN (Manufacturer Part Number), which means the manufacturer's catalog number. Manufacturer's code can also be referred to as:
- Product ID
- Product number
- Manufacturer's catalog number
- Catalog Number for Part
- Catalog number
- Serial number.
Example
You are selling a new smartphone.
The manufacturer's code of Samsung Galaxy S10e is SM-G970F/DS. You can find it:
- on the manufacturer's website
- on the packaging.
You produce and sell your own educational toys.
If you produce your own products, you can assign a code to them yourself. Such a code is a market standard and will help you properly catalog your products.
The difference between an EAN (GTIN), a manufacturer code, and a serial number
- EAN (GTIN) is a standardized, unique number assigned by the GS1 organization. It only consists of digits — with no letters or special characters. The manufacturer uses it in trade.
- The manufacturer's code is assigned directly by the manufacturer. There is no standard to regulate it, so it can have any length or characters. It can contain digits as well as letters. The manufacturer usually uses it to identify the product within their assortment. Sometimes products from different categories have the same manufacturer's code.
- The serial number is assigned by the manufacturer to identify which batch the product comes from and where it was manufactured or serviced.
How to complete product parameters correctly
The parameters you enter are meant to help the customer check whether your product is the one they are looking for. If you provide incorrect data, you may confuse or discourage the buyer.
Thanks to the parameters, we know what product you sell in your offer. They also allow you to link offers with the Product Catalog and add new products. That is why you should avoid entering:
- incorrect values such as random strings of characters and numbers, for example: xyz, zzzz, 111
- ambiguous values that say nothing about the product, for example, none, other, remaining, own
- keywords, which are the phrases that you include in your offer description or words that you think will help people find your offers, for example, Cheap, Hit, Discount
- your login
- phrases that are non-compliant with the Terms & Conditions.
There are two ways of completing parameters, depending on their type:
- You can select an appropriate parameter from the value list (for example, Color).
- In the case of parameters for which you choose a value from a list, we also provide the value other. In that case, you can enter the value you think is missing in the list.
What if you do not know how to complete parameters
If the product you are selling is available in the Allegro Product Catalog, we will complete most of the necessary information automatically. If this does not solve your problem, you can try to:
- find the information on your own — visit the website of a given brand, manufacturer, or distributor, and check whether you can see the missing data You can also check online catalogs. For example, if you sell books, you can check the ISBN in the virtual catalog of the Polish National Library.
- reach out for support — the manufacturer or distributor should have detailed information about each product they offer. Try reaching them by phone or email and inquire about the data you need.
Examples of parameter markings on the packaging
Allegro shoes
Size label
