Economic operators must cooperate with market surveillance authorities on actions that can eliminate or mitigate product risks. Authorities have powers to require documents, technical specifications, compliance data, technical information, embedded-software access where necessary for conformity assessment, supply-chain and distribution-network information, quantities on the market, related model information, and website-ownership information relevant to an investigation.
The practical requirement is to keep the conformity file request-ready. A team should be able to identify the product version, applicable Union harmonisation legislation, EU declaration or declaration of performance status, test reports or certificates, technical-documentation location, responsible operator, supplier inputs, and the person authorised to answer an authority in the required language.
When an authority proposes a measure, decision, or order, Article 18 requires exact grounds, notice of available national remedies and time limits, and normally at least 10 working days for the operator to be heard. Urgency based on health, safety, or another protected public interest can justify acting before the hearing, but the authority must then offer the hearing as soon as possible and review the measure promptly.