The structure of Luminate Online API methods' XML response documents are defined in XML Schema Definition (XSD) files.
The top-level XSD file is located at
http://service.convio.net/xmlschema/crm.public.v1.xsd.
Within the XML response documents of API calls, "xsi:schemaLocation" attributes reference this location.
The top-level XSD file includes several other XSD files that define the structures used by each API.
Top-level XSD that defines the root documents for API methods' responses and common error response documents.
The root document elements generally reference a type definition that is included from an API-specific XSD.