That's mean.,
If purchase a C/G Rs. 11800 (Basic Rs 1000 & GST Rs. 1800).
If You will book C/G value Rs. 11800 in Your books of accounts then no way for claim ITC...
If You will book C/G value Rs. 10000 in Your books of accounts then You ll claim ITC Rs. 1800...
Are you understand...?!
Better to You understand...!