Disputed territories

Global

Areas with contested sovereignty (e.g. Crimea, Kashmir, Western Sahara) may appear in different admin boundary sources assigned to different countries, causing double-counting or gaps in cross-vendor crosswalks.

Detection

Same geographic area claimed by two country/region features across vendor boundary sets; overlapping polygons from different sources.

Mitigation

Pick and document a single boundary-source convention (e.g. de facto control) per delivery
Flag disputed-area cells in provenance metadata rather than silently picking one side

Affected conversions

Admin polygonsH3 (max-overlap partition)
Admin polygonsH3 (weighted crosswalk)
H3platform-native IDs