The MetdadaResource structure definition JSON "is-a" Canonical resource, but is missing the fields that are defined on CanonicalResource here: http://hl7.org/fhir/2020Feb/metadataresource.profile.json.html

E.g., MetadataResource.url, MetadataResource.status, MetadataResource.status, date, publisher, etc. are all missing

Suggested change: add all the CanonicalResource elements into MetadataResource StructureDefinition snapshot.