Good day

I use Pastel Express and forgot to submit one invoice.
I noticed this after I've already closed the tax period.I have issued the invoice but the changes does not seem to have affected the tax return as the amount due to SARS still reflects the same.
Is there any way that I can undo this, just so that I can capture the missing invoice
Maybe there's a setting to undo it

Appreciate your soonest feedback

Regards