How long must I keep technical documentation?

You must keep technical documentation for at least 10 years — this is a hard minimum standard under the GPSR. This documentation includes design drawings, risk analyses, test reports, certificates and quality control data. In practice, this means you need a digital storage system that is audit-proof (changes are traceable, deletion is not possible). Cloud solutions such as SharePoint with version control or specialist compliance software work well. A paper folder in your office is insufficient and would lead to fines during a regulatory inspection.