Details regarding trans 1

A service provider( providng repair and maintenenace service )  was not registered  under service tax. But when he gets himself registered under GST, He had inputs which he uses while providing his service, Now on thedau]y He gets registered he has stock on which he has paid VAT. Now can he avail the credit of input Vat by filling Trans 1. Part 7 (C) of Trans 1 deals with this provision. Pls Imform me  can a service provider claim input on vat paid stock in trans 1 part 7(c)