Gstr-1 debit note

Debit note can be raised only agaisnt Invoice. If the Inovice reference is not availalbe in the earlier returns than GSTR1 will not accept the debit note. Ideally in your case you should have raised Invoice for freight charges and not the debit note. Now the only alternative i can see is show it as Invoice only instead of debit note. This is turnaround solution and if any queries comes later you can always explain. Important is to show this trasactions and pay the taxes.

Have you collected GST with the freight charges .?

Since GST portal doesn't have the original invoice in the database , it will always show error "invalid original invoice details", in such case you can show such debit note as fresh invoice towards reimbursement of Freight charges cz otherwise portal.will.not accept such debit note till the time the original invoice details matched.

Yes . Debit Note raised along with GST

I agree with the above replies posted. Since you have not raised an Invoice you cannot rectify it with Debit note. Raise it as a separate invoice and add the same with your taxable turnover for the current month and also show under GSTR-1 in that month. As you have collected it with GST this is the best possible solution madam.

Thank you to Jeeva &Surgeet. this is the ideal solution.

Thanks & regards,

Bhavya.P