Primary and secondary assignment

Guidewire PolicyCenter distinguishes between the following different types of assignment.

Primary assignment: Also known as user-based assignment, primary assignment assigns an entity to a single owner only. The entity must implement either the Assignable delegate or the PCAssignable delegate, or both.
Secondary assignment: Also known as role-based assignment, secondary assignment assigns an object to a particular user role. Each role is held by a single user at a time, even though the user who holds that role can change over time. The entity must implement the RoleAssignments array.

In the PolicyCenter base configuration, only the Activity and UserRoleAssignment entities implement primary assignment. All other assignable entities use secondary assignment.