"Do the Right Thing...!!!"
128116 Points
Joined January 2015
Dear.,
My reply based on your query. So, don't be take it yourself as mismatch...
In your november transactions outward liability (except misssed invoice)) is above your inputs then you are paid the liability. The missed invoices are november month's liability. So, You will pe pay Tax with Interest.
In case your output liability (include missed invoices) less than Inputs then you don't want pay Tax and Interest... You just show the sales figure in December Return.. But, You will file your GSTR 1 correctly.
>>> GOOD LUCK <<<