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 media was input)....12/5/2018
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 media was input). There may be cases where the source system (how the record is received) is not the originating system. See Source System Media Key for more information.
