how to deal with purchase return under GST regime

Can we claim input tax credit of previous month's purchase in succeeding month's GSTR 3B ?

My client has a restaurant.He is under GST(Regular,Tax rate 5%).I have opted quaterly Return.Please advise how to filing GST Return.How do I upload the huge retail bill?

WHAT IS GST RATE ON SCRAP SALE GUNNY BAGS WHAT IS HSN CODE FOR SCRAP SALE GUNNY BAG,
WE ARE SALE GUNNY BAGS RS.6.15 PER PC.THIS TYPE OF SALE WHICH GST RATE INSERT IN SALES BILL KINDLY GIVE THE SOLUTION.

Is GST applicable on supply of solar energy and whether VAT was applicable on the same or not? In my invoice solar energy is being supplied to IIT GUWAHATI and in the invoice its written in the particulars as 'Export Energy'.

X Company forgot some sales of Rs 100000 /- Taxable value @18%. in Sept 2017 In GSTR -3B and also forgot to file in the GSTR-1 in Quarterly Return ie in Sept 2017 the same invoices.

Company also filed GSTR-1 for Q3 ie Dec 2017 ended without considering the above invoice.
My question is what is the interest amount ? for SGST and CGST?
and how to rectify that mistake now.

Dear Sir,
We are biscuit manufacturer . We to survive in a market give free . For example , 1 Cartoon Biscuit free with every 15 cartoon.Rate of 1 cartoon is Rs.100/-.
Currently we are billing in below manner:-
(15*100+1*0)=1500 taxable Value , Gst 1500*18%=270 , Total bill value =1770(1500+270)
Note that presently we are reversing ITC in respect of free sale.
We Wish to bill in below manner :-
15*100=1500
01*100= 100
(-)Discount=-100
Taxable Val=1500
GST@18%= 270
Bill Value = 1770

Pls advise what is the best option and your advise if any .

Dear Sir,
We are biscuit manufacturer . We to survive in a market give free . For example , 1 Cartoon Biscuit free with every 15 cartoon.Rate of 1 cartoon is Rs.100/-.
Currently we are billing in below manner:-
(15*100+1*0)=1500 taxable Value , Gst 1500*18%=270 , Total bill value =1770(1500+270)
Note that presently we are reversing ITC in respect of free sale.
We Wish to bill in below manner :-
15*100=1500
01*100= 100
(-)Discount=-100
Taxable Val=1500
GST@18%= 270
Bill Value = 1770

I try a gst registration but receive follwing commend what i do?
PAN and legal name is nat matching with CBDT database.Please submit PAN and legal name validating with database.
Wha

Dear Experts,

Request you to please share your views on below point :-

We have multiple location in same state, is LUT required separately premises wise or we should apply one application indicating detail of all premises in state.

Thank You