'required|integer', 'student_id' => 'required|integer', 'school_year' => 'required|string|max_length[20]', 'source_school_year' => 'permit_empty|string|max_length[20]', 'status' => 'required|in_list[active,used,revoked,expired]', 'reason_code' => 'required|string|max_length[80]', 'reason_note' => 'required|string', 'created_by' => 'permit_empty|integer', 'approved_by' => 'permit_empty|integer', 'enrollment_id' => 'permit_empty|integer', 'revoked_by' => 'permit_empty|integer', ]; }