The Validation utility validates the entire topology model or a specific area specified by a fence according to criteria specified in the Cadastre Options Dialog dialog. This criteria determines the validity of a parcel in boundary-only mode, which refers to schemas without node features, and also for schemas with node features.

These additional validation rules apply when using node features:

• Nodes can exist without boundaries.

• Boundaries cannot exist without nodes.

• Two nodes can be joined by only one boundary.

• A boundary can only be one element type and is bounded by a node at either end point.

• Parcels cannot exist without a collection of boundaries and nodes that create a closed polygon.

• A parcel can have one or more holes as long as the hole is topologically valid with a collection of nodes and boundaries with its own face ID.