TCO 0607542 makes imported water heaters (tariff heading 8419.19.00) that have a programmable logic controller plus both solar panels and sun trackers eligible for the Schedule 4, Part III, item 50 tariff concession from 1 May 2006. The order was issued by a CEO delegate (Wendy Knowles) and can be revoked under sections 269SC/269SD. Importers matching the precise description pay reduced or no customs duty (a fiscal cost to government); claiming the concession requires meeting the exact classification and is subject to administrative discretion and potential revocation.