do i really need an VAT number

we are open for a year now. booking is asking me for a VAT number. we do not have this, is this really necessary? 

in the tab finance --> VAT, I don't have a box marked NO. 


Baia Luz Beach… 5 months ago

Same is happening with me. My property is in Portugal and we are below the threshold for VAT. And on extranet is NOT showing a option for NO vat number for some reason. Really don't know how to provide them with something that I do not have.