‘geolocation’ means the geographical location of a plot of land described by means of latitude and longitude coordinates corresponding to at least one latitude and one longitude point and using at least six decimal digits; for plots of land of more than four hectares used for the production of the relevant commodities other than cattle, this shall be provided using polygons with sufficient latitude and longitude points to describe the perimeter of each plot of land

This one sentence is the legal source of most of what a geolocation file has to get right:

Micro or small primary operators may replace geolocation with the postal address of their plots or establishment (Regulation (EU) 2025/2650, Art. 1(5)).

Sources

Last verified against these sources on .