The supplier performs a functional safety assessment of its developed element or work products and provides the assessment report to the customer at the milestones and in the form the DIA defines, and the customer's functional safety assessment considers the supplier's report (part 2 6.4.12.7 and 6.4.12.8 describe exactly this). This sits in clause 5, whose stated aims are to set out how customer and supplier interact and depend on each other, who is responsible for what, and which work products they exchange in a distributed development. See the official text for the full requirement.
This control maps to 1 controls across 1 other frameworks. If you already hold one of them, the evidence you collected for it is the starting point here rather than new work.
Every mapping shown was judged rather than inferred from wording similarity, and the ones that failed review are published too. See the coverage reports and what was rejected.
The graph holds this control, the 1 it maps to, and the evidence behind each claim, over MCP and REST.