| SpatialGeometryValidity_None | Indicates no specific validity; used for unknown or default states. |
| SpatialGeometryValidity_Valid | Geometry passes a test. |
| SpatialGeometryValidity_Invalid | Geometry fails a test. |
| SpatialGeometryValidity_InvalidButCanBeApproximated | Geometry fails a test, but could be approximated using allowed types. |
| SpatialGeometryValidity_InvalidDueToDimensionality | Geometry fails a test due to having an disallowed dimensionality. |