Yes, for an organisation: fill in Site Identity → Return Policy. Choose the kind of policy, the countries it covers and, for a set window, the number of days. It is added to your organisation's markup, where Google reads a shop-wide return policy for merchant listings. If an SEO plugin such as Yoast writes your organisation, the policy cannot be added to it, and the panel says so.
Still stuck? Ask the developers who wrote it. We aim to reply within one business day.
