Three Fields That Decide the Outcome
Practitioner surveys suggest the gap between a neat profile and a neglected one widens in a rural catchment. Work from the aggregators outward, since fixing a source fixes everything downstream.
Crucially, every entry in a directory is a slight claim about who {entity_s} is and where it trades.
Give one person the logins and one document the truth; ambiguity is what causes drift, even when nothing else changes. Across a large enough sample, the correlation between consistent data and listing completeness is hard to dismiss.