The system key, a unique record identifier, from the originating system. The originating system is the system with authoritative control over the record (e.g., the MLS where the history was input)....2/18/2016
DefinitionThe system key, a unique record identifier, from the originating system. The originating system is the system with authoritative control over the record (e.g., the MLS where the history was input). There may be cases where the source system (how the record was received) is not the originating system. See Source System History Key for more information.
