Gst trans 1 & trans 2

dear sir/ madam,

I am a dealer, I have purchased goods from supplier who is a manufacturer & he added cenvat credit is his bill & material is in stock as on 30-06-17 for which i have to declare in Trans 1.

I am liable for Tax Credit for that Cenvat Credit. My question is it necessary for me to sale that stock before unloading Trans 1 & is it necessary to file Trans 2 to avail the credit.