If "they" (they've come out with a question) are the company, then who is the customer?
Usually "Qualified" has to do with inspection. There's a relatively new (new to me anyway) internationally accepted system called ISO 9000, or something like that which requires manufacturers to go through a lengthy "qualifying" procedure, after which they are allowed to routinely forgo some types of inspections on a job by job basis. (I'm sure that's over-simplified.)
Earlier, in the early sixties, I set up expensive machines for the manufacturer in the customer's plant. Each one had to be "qualified" (accepted) by the customer's in-house inspection team, through a series of test runs. (Like a qualifying run for an auto race.)
To me, "qualified" is misused in your example, but "special" expressions are common in many communities eg manufacturing.
It sounds like an all-around word for "officially verifying" just about anything.
- A.
Edit. Although "to qualify" often means "to limit," I think Philip hit the nail on the head here with "to make certain."