Key terminology used throughout the Data Dictionary.
- Standard Name
- The canonical machine-readable name for a field or lookup value.
- Definition
- A human-readable description of what an element represents.
- Added in Version
- The Data Dictionary version in which the element was first introduced.
- BEDES
- Building Energy Data Exchange Specification — a related standard referenced by some DD elements.
- Collection
- A set of related records accessible via the Web API (typically maps to a resource).
- Groups
- Logical groupings of fields within a resource (e.g., Listing, Location, Tax).
- Synonym
- An alternative display name for a standard field or lookup value.
- Lookup Name
- The identifier for a lookup (enumeration) that a field references.
Element Status
- Active
- The element is part of the current Data Dictionary and may be used in certification.
- Deprecated
- The element is scheduled for removal. It is still recognized but should not be used in new implementations.
- Deleted
- The element has been removed from the Data Dictionary.
- Proposed
- The element is under consideration and has not yet been approved.
Lookup Status
- Open
- Any value is allowed. No standard enumeration is defined.
- Open with Enumerations
- Standard lookup values are defined but providers may also include additional local values.
- Locked
- Only the standard lookup values are allowed.
Simple Data Types
- Boolean
- True or false value.
- Collection
- A multi-valued field referencing a set of lookup values.
- Date
- A calendar date without time.
- Number
- A numeric value (integer or decimal).
- String
- A sequence of characters with a defined maximum length.
- String List, Single
- A single value selected from a lookup.
- String List, Multi
- Multiple values selected from a lookup, represented as a collection.
- Timestamp
- A date and time value, typically in ISO 8601 format.
Terms and DefinitionsGenerated April 22, 2026
