Validation of XML instance for reference system information

Conformance Class ISO.org Preview
Identifier
https://standards.isotc211.org/19115/-3/2/conf/metadata-xml/reference-system
Requirements class
req class /req/metadata-xml/reference-system
Dependencies

Conformance Tests

Validate with XSD
/conf/metadata-xml/reference-system/schema-valid
Valid MD_ReferenceSystem with identification properties
/conf/metadata-xml/reference-system/identifier
Valid MD_ReferenceSystem with property "crs"
/conf/metadata-xml/reference-system/coordinate-epoch