In my country, it is mandatory to use numeration on each invoice that is generated.

Let's say I have got A001, A002, A003 and A004 invoices.

If for some reason I have to repeat an invoice because the employee sent the price wrong, I proceed the following way. Invoice -> Cancelled. Create a new invoice with the corrected price. Is this the right thing to do? There is also the alternative option of editing invoices, but I feel it is even worse.

Let's say I go with the cancel Invoice method. I cancel "A002". On the new invoice it will autopopulate the numeration field with the new invoice number "A005" instead of the one that is no longer used "A002". How can I make the automation so that it used "A002" instead of "A005". As country regulations, I can not skip the numeration.

Right now we are writing down the numerations that are cancelled so we can use them on the next invoices, but this seems like a pretty bad way of doing it. 

I would appreciate any recommendation.