Grid entity ID and risk ID
A risk ID and entity ID are unique identifiers for records maintained in the Grid database.
Risk ID: A profile's risk ID is a unique identifier for a profile on a person or organization. While updates may be made to an entity profile over time, the risk ID always remains the same.
Entity ID: An entity ID is a unique identifier for a particular version of the profile, as all versions of all profiles are maintained for data integrity purposes.