Enumerated Domains (EnumeratedDomains.xsd) are explicit lists of pre-defined values that may be assigned to a data-item and any value assigned to an instance of that data-item must be a member of that defined list. For example a Boolean could be considered an enumerated Domain, with "True" or "False" as the only allowed values, as are {Days of Week} and {Country Codes}. In fact Enumerated Domain is actually a bit of a misnomer because it covers all pre-defined lists of allowed values, classification schemes and taxonomies not just "numbered values". Basement 1st 2nd 3rd 4th 5th 6th 12th 13th 7th 10th 11th 8th 15th 9th 16th Ground 17th 18th 14th 19th 20th 21st or above granite or whinstone sandstone solid brick cavity timber frame system built pre 2002 post or during 2002 unknown secondary glazing single glazed Not Defined Internal External House Bungalow Flat Maisonette mains gas LPG bottled LPG oil anthracite wood logs bulk wood pellets wood chips electricity dual fuel - mineral + wood waste combustion biomass biogas - landfill house coal smokeless coal None full partial boiler community heating storage heaters warm air heat pump - wet system heat pump - dry system electric ceiling heating electric underfloor heating room heater none private mains Types of roof that a Property may have. None Flat Pitched Another dwelling above Code which indicates the country within the UK, taken from BS 6879. England and Wales Scotland Northern Ireland Code which indicates the region within the UK. Borders East Anglia East Pennines East Scotland Highland Midlands North East England North East Scotland North West England Northern Ireland Orkney Severn Valley Shetland South East England South West England Southern England Thames Valley Wales West Pennines West Scotland Western Isles