Once the high-risk basis is known, apply Article 43 without collapsing the categories. Annex III point 1 systems can use internal control under Annex VI only when the provider has applied harmonised standards, or common specifications where applicable, that cover the relevant requirements. Otherwise Article 43 requires the Annex VII procedure with assessment of the quality management system and technical documentation by a notified body.
For Annex III point 1 systems, also use Annex VII when harmonised standards do not exist and common specifications are unavailable, when the provider has not applied the harmonised standard or has applied it only partly, when common specifications exist but are not applied, or when a harmonised standard is published with a restriction for the restricted part.
For Annex III points 2 to 8, Article 43 points providers to the internal-control procedure in Annex VI. That still requires the provider to verify the quality management system, examine the technical documentation, and confirm that design, development, and post-market monitoring are consistent with the documentation.
For Annex I Section A product-law systems, follow the conformity assessment procedure required by the relevant product legislation. If that legislation allows the manufacturer to opt out of third-party assessment because all relevant harmonised standards are applied, Article 43 allows that option only when harmonised standards or common specifications also cover all AI Act Chapter III Section 2 requirements.