OK, before everyone goes off and gets their pitchforks sharpened, it’s worth noting that the Wm Grant’s Market Report in 2014 showed somewhere around 70% of whisky sold in the off trade was bought as gifts.
Person A buys 2 bottles, gifts one to person B.
Person B concludes months later that they want to get rid of some whisky for whatever reason.
Unfortunately your “tracking bottle numbers" mechanism doesn’t account for this, and afaict nobody’s done anything “wrong”?
What’s the solution? This was already a vatting of 7 hogsheads & 2 butts, so to increase availability you either need more casks (which you may not have), or reduce bottling strength (not always popular)…
Don’t know what my point is. As you were.