Short sale amount entered in gstr 3b & gstr of sep

Rectify it in your next GSTR-3B and GSTR-1.

Thanx sir, But this sale amount is pertainning to the FY 17-18 & Next GST return in FY 18-19, then is it possible?

Ok, Then which Amount Should i Enter in the GSTR 3b of April 18 Rs. 3,50,000/- (Difference of Rs. 4,50,000/- & Rs. 1,00,000/-)?

Yes in 3B 350000, you will have to discharge tax along with interest also. In GSTR-1 you will go to amendment of invoice option and amend the invoice, instead to 100000 you will write 450000.

Ok thank u sir for your Valuable Advice, My query solved

Shivam Sir, 

In my Books of account sales entry for balancing amount will be done in current month right or wrong

If it is possible to pass back dated entry then you will pass such entry in Sep 2017 or else in May 2018.

Note- Reconciliation statement is a must for these type of transaction, for enabling audits and also for control purpose.