DSA marketplace trader traceability what must marketplaces do?

For an online marketplace in scope of Article 30, a trader should not be able to promote messages about products or services, or offer products or services to consumers located in the Union, until the platform has obtained the required trader information.

The marketplace also has to make best efforts to assess whether the information is reliable and complete before the trader uses the service. That assessment can use freely accessible official databases or online interfaces made available by a Member State or the Union, or supporting documents from reliable sources requested from the trader.

Article 30 separates internal collection from consumer-facing disclosure. The marketplace does not publish every collected item, but it must make the trader's name and contact information, trade-register information where applicable, and the trader's compliance self-certification available to recipients of the service in a clear, easily accessible, and comprehensible way.

The disclosure belongs at least on the marketplace interface where the product or service information appears. Hiding the trader's identity until after checkout is the type of presentation risk the DSA is designed to avoid.

If the marketplace has sufficient indications or reason to believe that Article 30 trader information is inaccurate, incomplete, or not up to date, it must ask the trader to remedy the problem without delay or within the period set by Union and national law.

If the trader does not correct or complete the information, the marketplace must swiftly suspend the service for that trader in relation to products or services offered to consumers located in the Union. A refusal or suspension decision also connects to the DSA complaint routes available to the trader.

Trader traceability should be implemented together with Article 31 marketplace interface controls. The interface must let traders provide required pre-contractual, compliance, and product safety information, including product or service identification, trader signs such as a trademark or logo, and applicable labelling and marking information.

After a trader is allowed to offer products or services, the marketplace must make reasonable efforts to randomly check official, freely accessible, machine-readable databases or interfaces to see whether offered products or services have been identified as illegal. If the marketplace becomes aware that an illegal product or service was offered, Article 32 requires consumer information where contact details are available, or public notice where they are not.

The useful evidence is the proof that the marketplace actually enforced Article 30 in seller onboarding and live seller maintenance. Keep the collected trader data securely, document how reliability and completeness were assessed, and tie each trader status change to the relevant product or service flow.

Article 30 requires secure storage during the contractual relationship and for six months after it ends, followed by deletion. Disclosure to third parties should be limited to cases required by applicable law, including DSA orders and competent-authority or Commission orders.