Exclusion for metal scrap suppliers exempts supplies of metal scrap under relevant Customs Tariff chapters from the notification's application. The amendment inserts a proviso excluding any person engaged in the supply of metal scrap falling under the first schedule to the Customs Tariff Act from the application of the earlier Haryana GST notification, and substitutes the terminal punctuation after the first paragraph; the change is made under the Haryana GST Act and includes an effective commencement date.