Dominant / Topsoil texture class
OptionaldrainageDrainage classification
Ordered list of soil horizons from surface to bedrock/subsoil
OptionalmaxMaximum depth of root penetration in cm
OptionalontologyStandard ontology mapping
Origin / Provenance of the pedological data
OptionalparentParent rock / geological substrate description
OptionalsourceSource GPS coordinates if resolved via geospatial API
Standardized Multi-Horizon Stratified Soil Profile Specification Interface