Sec. 2(30) of the Central Goods & Service Tax Act, 2017 — Composite Supply — The Applicant, stated to be a supplier of power solutions, including UPS, servo stabiliser, batteries etc. wants a ruling on the classification of the supply when it supplies UPS along with the battery. More specifically, he wants a ruling on whether such supplies can be treated as Composite Supply within the meaning of Section 2(30) of the CGST/WBGST Act, 2017. Note 3 to Section XVI of the Tariff Act defines a composite machine as the one consisting of two or more machines fitted together to form a whole. Such machines, as well as other machines designed for the purpose of performing two or more complementary or alternative functions, are to be classified as if consisting only of that component or as being that machine, which performs the principal function. Note 3, therefore, is applicable, in this context, to composite machines. Other machines, designed for the purpose of performing two or more complementary or alternative functions, however, can be classified with the help of Note 3 only if they are naturally bundled and supplied in conjunction with one another in the ordinary course of business. Authority for Advance Ruling, West Bengal held that:—The supply of UPS and Battery is to be considered as Mixed Supply within the meaning of Section 2(74) of the GST Act, as they are supplied under a single contract at a combined single price.[2018] 51 TUD 22 (AAR-WB)