Trying to Rehire Employee ( hr_employee_api.re_hire_ex_employee) Getting OBVN error

Good Afternoon All ~

I am working on trying to rehire employees with the following API and I am getting the infamous OBVN error.  See Below.

DECLARE

     ln_per_object_version_number      PER_ALL_PEOPLE_F.OBJECT_VERSION_NUMBER%TYPE;

     ln_assg_object_version_number     PER_ALL_ASSIGNMENTS_F.OBJECT_VERSION_NUMBER%TYPE;

     ld_per_effective_start_date       PER_ALL_PEOPLE_F.EFFECTIVE_START_DATE%TYPE;

     ld_per_effective_end_date         PER_ALL_PEOPLE_F.EFFECTIVE_END_DATE%TYPE;

     ln_assignment_sequence            PER_ALL_ASSIGNMENTS_F.ASSIGNMENT_SEQUENCE%TYPE;

     lb_assign_payroll_warning         BOOLEAN;

     v_PersonID                        number;

     g_assignment_id                   number;