The core functions of Durban Customs include trader management, trade administration, border control, container security initiative, post clearance audits and inspections, regional training, regional risk management and passenger movement. The Harbour is currently surrounded by industrial and residential property. The location of the Harbour has continued to constrain the potential for expansion and has been noted as one of the major challenges. SARS has also noted Richards Bay Harbour has limited container traffic. Therefore, to ease the burden on the Durban Harbour, some of the traffic would be diverted to Richards Bay which is suitably located and which can be expanded as well.