A unique identifier for this record from the immediate source. This is the string key and the local key of the system. When records are received from other systems, a local key is commonly applied....7/25/2019
DefinitionA unique identifier for this record from the immediate source. This is the string key and the local key of the system. When records are received from other systems, a local key is commonly applied. If conveying the original keys from the source or originating systems, see SourceSystemMemberKey and OriginatingSystemMemberKey.
