Feature type

These pages describe the single feature type (OS Open UPRN) available for the OS Open UPRN product. The attributes associated with the feature type are listed on the following page. The following information is given for each attribute.

Feature type attribution information

Name and definition

The name of the attribute and what it is describing.

Attribute type

The nature of the attribute (for example, a numeric value or a code list value).

Size

The maximum length of the values in the attribute.

Multiplicity

Describes how many times this element is expected to be populated in the data. An attribute may be optional or mandatory within the OS Open UPRN product and this is denoted by:

• '1’ – Mandatory: There must be a value.

• ‘0..1’ – Optional: If populated, a maximum of one attribute will be returned.