Abbreviations AEO Authorized Economic Operator. AO/IC Document describing the Administrative Organization and Measures of Internal Control. BzCtrl. A cloud-based compliance tool to perform business controls in a structured and efficient manner. CMS Compliance Management System. CS Customer Services. CSC Customer Services and Customs. FETSA Federation of European Tank Storage Associations. GT&C’s General Terms and Conditions. HQ Headquarters. OPS Operations. QOL Quality Online. TMS Terminal Management System. CGT Customs and Global Trade.