Barry Ward (Fine Gael) | Oireachtas source

What I am asking is whether the head gives a bald indemnity for someone to almost say what they liked in demanding a receipt or proof of payment or the genuineness of a note or whatever it might be. My concern is whether it removes the requirement of a retailer to be respectful or polite or do the witnesses still take the view that would be a defamation were they to do that?