PLD - Tax exempt

Hi all,

I need to have a field on PLD that indicates something like "VAT not collectable according to artº 6, n 5..." always we have an invoice exempted.

Plus, there are two vat codes that are going to be used for different situations and they must have different texts.

Is there a way to do this? I've tried the same way we do to have invoice triplicate, but it doesn´t work. Thanks

Regards,

Pedro Santos