Originally Posted by
jjgollum
So what does it mean when you have a voucher that states it is Type AB?
Unfortunately, nobody knows for sure. If you do a google FT search for "type ab voucher" you'll find a few threads. The general concensus is that Type AB operates like Type B in that it's a form of payment, but cannot be combined with any other voucher, including Type B vouchers. But, nobody has had any definite word on this.