Raene,

I agree with jddt, if the AFS are finalised, process the transaction in the current year.

For VAT purposes you have to be careful not to include it in a previous VAT period though, as that might throw out your VAT reconciliation. So when you post it, choose the current VAT period's period, in order for you to claim it in the current period. Just not sure about the date, maybe the 1st date of the financial year?

You are allowed to claim this invoice up to 5 years after the date of the invoice.