itc query

Tarun Shah (264 Points)

06 September 2017  
my certificate issue date 25/07/17.& liability date mentioned in certificate 20/07/17.my invoice date 15/07/17. i have uploaded invoice in gstr1 erorr come invoice before registration. so what can i do?
My other query can i get itc on my puchases before liability date 20/07/17