Product data & data quality

Product data & data quality: Clear information for buyers and sellers

Accurate product data reduces questions, returns and misunderstandings. This article explains which details matter and how sellers can maintain them practically.

Published 8 October 2026Neutral editorial guide

Why accurate product data matters

Clear product data forms the foundation for satisfied customers and efficient operations. Shoppers often decide from the title, images and a short description alone. Missing dimensions, unclear variants or incomplete mandatory information lead to questions, wrong orders or returns. For sellers, accurate data means less support work, better visibility in search and filters and easier integrations with marketplaces or comparison sites. Clean data also supports internal processes: logistics, procurement and accounting run more reliably when SKUs, weight and technical specs are correct.

  • Fewer questions and returns
  • Better visibility on shops and marketplaces
  • Easier automation and exports
  • Consistent basis for marketing and catalogues

Mandatory details and legal basics: Some information is mandatory for legal reasons. This can include country of origin, energy labels for electrical goods, safety warnings and seller contact details. Sellers should check which rules apply in Switzerland for their product categories. Basic data like GTIN/EAN, manufacturer and item number should be recorded for every product. Missing mandatory information can cause returns or legal issues. A practical approach is to keep a checklist per product group to ensure nothing is overlooked when new items are added.

  • Check legal requirements for each product category
  • Record GTIN, manufacturer and internal item numbers
  • Use a checklist per product group

Variants, dimensions and technical specs: Variants such as colour, size or storage capacity must be clearly structured. Each variant needs its own identifier and specific data for dimensions, weight, material and technical characteristics. Avoid vague statements like “fits many models”. Instead, provide compatibility lists, dimensions in millimetres and clear performance values. For technical products, list voltages, connectors or power ratings; for clothing, provide measurements and care instructions. Consistent units and a uniform format help shoppers compare variants easily.

  • Each variant with its own ID and clear attributes
  • Dimensions in mm/cm and weight in g/kg
  • Technical data precise and in consistent units

Categories, descriptions and ongoing maintenance: Good categorisation and clear product texts improve findability and buying decisions. Choose category structures that match how customers filter and search. Start descriptions with a concise summary that lists key features, then add details and use cases. Maintain metadata like keywords, short and long descriptions separately. For ongoing data quality, use templates, required fields in your PIM or shop backend and regular checks. Define who creates data, who verifies it and how updates are rolled out.

  • Pick categories so filters make sense
  • Short description for quick decisions, long description for details
  • Regular data checks and clear responsibilities

This guide was created with AI assistance and published automatically. Binding product details are shown on the linked product pages.

Discover and shop

Shop for products simply and safely online

At OpenDeal, you can find products for many everyday needs and review the key information in one place. Clear images, visible prices and concise details help you compare an offer before you make a decision. Open the product details when you want more information about condition, stock, delivery or pickup. Compare suitable offers with your needs and budget, then review your cart before you complete the purchase.

Everything clear at a glance

Each product page brings together the price, condition, availability and other useful details for your decision. Read the details carefully and check which parts, options or services are included with the offer. Compare similar products with your needs, budget and the way you expect to use them. This makes it easier to choose an offer that is suitable for you.

Images help you choose

Review the product images carefully and look at the shape, colour, surface and other visible details. Several views can make the size, condition and important features easier to understand before you decide. Then read the description and check whether the written details match what you can see. This gives you a clearer picture of the product before purchase.

Your favourite in the cart

If you like a product, add it to your cart and review the price and quantity there. You can change the quantity, remove an item or continue shopping before you move to checkout. Before the next step, check the selected variant, condition and the available shipping or pickup method. Continue to checkout only when the full selection is correct for you.

Buying is this easy

Choose a product, review the information and add the item to your cart when it suits you. At checkout, enter the required details and review the full order before you confirm anything. Check the price, quantity, address and the available shipping or pickup option one final time. Confirm the purchase only when the details and total cost are correct.

Shipping or pickup

Each offer explains how the product will reach you and which conditions apply to the handover. Many products can be shipped, while other offers may be available for pickup at a stated location. Before you buy, review the location, possible costs and any important notes from the seller. This helps you choose the option that works best for your schedule and location.

Shop with confidence

OpenDeal presents offers clearly so that you can compare products and understand the key information before buying. Fixed prices support your planning, while images and concise descriptions make different products easier to assess. Take enough time and complete the purchase only when the offer matches your expectations. This keeps the process clear from the first search through to the final order.

Browse at your own pace and discover useful products for daily life, your home or a suitable gift. Open the offers that interest you and review the price, condition, stock and handover information. Before you buy, check the important details once more and give yourself enough time to decide. This helps you make a careful choice and understand what happens next.