GST-Transitional provisions

Kothandaraman R (DGM) (41 Points)

20 May 2017  
A company paid CST, in current regime, based commercial invoice, which is as per the agreement between the parties, but the goods are kept in the supplier​'s premises at the request of the buyer. Hence Excise Duty is not yet paid. Now, if the goods are actually removed
in GST regime, what will be the tax liability? Under what provisions?