Can my company not engage an external WSH auditor to audit the completion of gap analysis and control and implementation plan (CIP)?

Companies identified to be on the WHS+ consultation and audit programme must engage an external third-party auditor to audit and verify that risk controls implemented are adequate and effective and all gaps identified in the Management of Hazardous Chemical Programme (MHCP) or Hearing Conservation Programme (HCP) are addressed, before the company can be considered for exit assessment.