As the ISL (International Scuba Law) WRT tanks is written and the codified VIP provisions outlined in Chapter 3.70, Section IV., paragraphs (a) through (r) . . .
it depends.
And for some tanks, it's not 12 months, it's maybe 6, or 3. Or even 0, just depending. At the end of the day, it's the fill operator who's at risk and their call. They should be doing their own cursory inspection regardless of what a sticker says and proceeding accordingly. If they want it redone and the mission is critical to you, I'd probably go ahead and get it done proactively so as to avoid arguing over a 1-30 day expiration of a sticker. But I could argue either side. (I wouldn't argue that the VIP is a silly waste of money just enriching the rich, greedy LDS owner. That's just nonsense.)
Not sure it's worth arguing about though. The sticker only looked at a single point in history (assuming it was backed by a worthwhile inspection) and cannot speak to the condition of the tank at any point in time after the inspector screwed the valve back on the tank. Any sticker that says "Valid/good for 12 months" is not worth the adhesive it's stuck to the tank with, IMHO.
