Data should include maps of lands with parcel layer that displays boundaries in addition to a land registry with information on registered parcels of land. The Index focuses on assessing open land tenure data (describing the rules and processes of land property). Responsible use may enable tenure security and increase the transparency of land transactions. The assessment criteria were developed in collaboration with Cadasta Foundation. For more information on land ownership datasets and where they're located, check out Cadasta Foundation's Data Overview.