GSTR2

means

Accept invoice for Accept , Reject invoice for Reject, But pending ?

u have to wait for at least 20 minutes,portal takes time to update your work.ones it's iniciated ,u can view total no of invoice uploaded by supplier as well as uploaded by buyer

pending option for
you don't want to take input in July month than you can take input in next month i.e. August.

example.
you purchase good from Delhi on 31 July than we take input on 3 or 4 August. it may take time 2 or 3 days to delivery goods in this case we cannot take input in July month.

for this pending option is there so we can take input in next month.

OK thanks lot