18 September 2017
No need to worry even if you dont give details in GSTR-3B.
I am also confused little bit that whether details are required to be given in 3B or not.
19 September 2017
1. Yes...
2. No
3. Yeah. If you received advance in a month. Also you supply the same month to the advance related. Then no need pay. You ll adjust your ITC...
In case the sale made next month then you ll pay Tax on advance in the receipt of the month. At the time of sales (advance party) you ll show payment of Tax and Receipt details in invoice....