HR Assignment API Error: Procedure sort_segment_order at Step 40

 I'm attempting to update job_id using the update_emp_asg_criteria proc in the hr_assignment api.  Here is the code I'm using:

o_concatenated_segments        hr_soft_coding_keyflex.concatenated_segments%type;
 o_soft_coding_keyflex_id       per_all_assignments_f.soft_coding_keyflex_id%type;
 o_comment_id                   per_all_assignments_f.comment_id%type;
 o_effective_start_date         per_all_assignments_f.effective_start_date%type;
 o_effective_end_date           per_all_assignments_f.effective_end_date%type;
 o_no_managers_warnings         BOOLEAN;
 o_other_manager_warning        BOOLEAN;
 o_org_now_no_manager_warning   BOOLEAN;
 o_special_ceiling_step_id      NUMBER;