{"type": "object", "properties": {"PARTICIPANTCLASSID": {"type": "string", "examples": ["MARKET PARTICIPANT", "NONMARKET", "POOL PARTICIPANT", "SPECIAL PARTICIPANT"], "description": "Class of participant"}, "DESCRIPTION": {"type": "string", "examples": ["Market participant", "Non Market Participant", "Pool Participant", "Special Participant"], "description": "Description of participant class"}, "LASTCHANGED": {"type": "string", "examples": ["1998/06/30 22:01:24"], "format": "date-time", "description": "Last date and time record changed"}}, "required": ["PARTICIPANTCLASSID"], "description": "PARTICIPANTCLASS sets out valid participant classifications.\nPARTICIPANTCLASS data is public, so is available to all participants.\n\nSource\n\nPARTICIPANTCLASS updates only if classifications change. This table\nchanges infrequently."}