That's the "Often purchase with this..." special discount offer.
I've never had a software auditor try to figure out what kind of key we had in anything. They just want a key number to stick in their spreadsheet next to each copy/machine. I've even just handed them a pile of license keys in a huge box and told them to figure it out once. Didn't have time for the silliness that month. Normally I'd be nicer, but they're paid by the hour and I had better things to go do to keep the company profitable.
Not sure what kind of audit you're going through but that's what I've seen over the years.