Legal entity is a module where you can register all legal persons i.e. owners of your farm. There are cases when farmers in some countries have more than one farm owner in the family (due to achieving various subsidies or tax benefits) and it’s important for them to have a possibility to dedicate fields and track all farm finances separately.
Vendor, on the other hand, is a person or an organization from which you are buying goods from. To find out how to add vendor to agrivi database click HERE.