Individuals who have previously received the CSO designation will have their designation recognized until their three year expiry date. At that time they will be required to: submit a completed NCSO™ renewal application form; pay the renewal application/examination fee of $50.00 + HST; complete the NCSO™ maintenance requirements; and successfully complete the national knowledge exam in order to receive the NCSO™ designation. Additionally, those who have received the CSO designation but did not challenge the CSO general knowledge exam will also be required to successfully challenge the provincial knowledge examination prior to receiving the NCSO™ designation.