Discovered by @ReesePlews . Thanks! On https://standards.isotc211.org/19131/-/2/req/xml/xml-encoding/ Screenshot: <img width="801" alt="Screen Shot 2020-11-10 at 2 54 55 PM" src="https://user-images.githubusercontent.com/11865/98638966-b37dcd00-2364-11eb-8e6f-42fd80bde50c.png"> It links to https://schemas.isotc211.org/19131/-/dps/2.0/dps.xsd , which gives 404. But the actual link is this: https://schemas.isotc211.org/schemas/19131/-1/dps/2.0/dps.xsd @magnusKarge should we update the link to point to the correct XML schema location?