How does the Declaration of Conformity relate to technical documentation?
The declaration is the signed compliance statement; the technical documentation is the evidence file that shows how the product and the manufacturer's vulnerability-handling processes meet the applicable CRA requirements.
Annex VII requires the technical documentation to include, as applicable, the product description, software versions affecting compliance, design and development information, vulnerability-handling process specifications, the cybersecurity risk assessment, support-period rationale, applied standards or other solutions, test reports, and a copy of the EU Declaration of Conformity. A declaration that cites a standard, certification, or notified-body certificate should be traceable to the corresponding evidence in that technical file.
Article 31 and Annex VII define the technical documentation contents, including a copy of the EU Declaration of Conformity.
Section 4.1.8 explains that technical documentation must demonstrate conformity regardless of conformity assessment route.