Declared resolution exceeds input accuracy

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A platform declares support for a cell resolution finer than its location input can carry: IP geolocation's published best-case accuracy radius (~5 km) exceeds the equal-area radius of an R6 cell (~3.4 km), so an R6-or-finer declaration on IP-derived geography is a claim the input cannot honor. R5 (~9 km) is the finest defensible declaration from IP alone.

Detection

Compare the declared minimum resolution's equal-area radius against the location source's published accuracy radius; declaration is unsupported when the cell radius is smaller.

Mitigation

Cap declared resolution by input provenance, not by platform capability — the ad server can accept an R6 list it cannot resolve
Carry a location-provenance field (physical, address_matched, platform_graph, ip_inferred) beside the declared resolution
Treat undocumented provenance as ip_inferred

Read the full article: IP Lookup To H3 →

Affected conversions

IP lookup → H3 (probabilistic crosswalk) approximate
H3 → platform-native IDs approximate