TDS exemption: supplies between persons specified under section 51(1) are excluded from notification coverage by amendment. An amendment inserts a proviso excluding supplies of goods or services between persons specified under clauses (a), (b), (c) and (d) of section 51(1) of the Central Goods and Services Tax Act, 2017 from the application of the earlier notification, thereby narrowing that notification's scope to omit such inter-person supplies.