I remember, it was common practice for the elders to meet together and "recommend" a brother for appointment, without that brother's knowledge. The elders would have the circuit overseer sign the letter, which would be sent to the society. Then the society would send a letter back saying that they have appointed the particualr brother. After that, an elder would apporach the brother to say he has been appointed, is it OK for them to announce it at this meeting or is there any reason he cannot serve.
That's how it worked in my own case too, except that I knew that the elders and circuit overseer had sent in the letter; they had told me so.
Therefore, a few weeks after the circuit overseer visit when one elder approached me this way, saying that I had been appointed and asking if there was any reason I would be unable or unqualified to serve. (Of course I said No.) I took it to mean, "Are there any disqualifying factors that may have been overlooked," or, "Has anything in your life changed since we drafted the letter to the society that would disqualify you?"
However, if something had been overlooked, or changed, would the holy spirit notice anyway? Duh!