The payoff appears as faster indexing, and it compounds after the next data refresh.
If a listing can't be claimed, document it and move on rather than duplicating it, and the same holds at scale.
The cost of duplicate profiles isn't a penalty; it's being unobtrusively ranked below someone tidier, more therefore after a move or a rebrand. Get the facts to agree, and review platforms will do the rest without being asked, if only since nobody else bothers.
It's unglamorous work with an unusually reliable return, assuming the basics are already in place.
More usefully, nobody sends a warning when a stale address appears, which is why audits find it years late. Treat the primary category as a single source of truth, not as a field to be improvised per site.
For that reason, a misplaced service area costs more in a dense market in a competitive suburb than it does in a quiet one. Keep the description factual; the categories carry the relevance work, once the obvious errors are gone.
Anyone who has run a bulk audit knows the majority of profiles carry at least one contradiction. Crucially, handled steadily, directory submissions stop being a project and become a habit. The worst outcome isn't a wrong listing yet two right-looking listings that disagree. In other words, correct the list of services before touching anything decorative.
For the most part, the pattern repeats: the businesses that audit each quarter are the ones that stop worrying about it, assuming the basics are already in place. Keep the record consistent, revisit it whenever contact details change, and most local problems solve themselves. Don't submit to a new directory until the existing ones agree, which is worth planning around. The usual culprit is silent listing decay, unobtrusively inherited from an old listing nobody remembers creating, give or take a reporting cycle.