`<Links> element`

The <Links> element is a subelement of <Zone>. This element defines one or more <Link> elements, each of which defines a connection—a link—between one zone type and another. For example, in the base configuration, Guidewire provides a <Link> element that defines a link between a county and a ZIP code in the United States. You can also use a link to define a lookup order to speed up searches.

Note: An address-config.xml file can define auto-fill elements that use these links. See Configuring autofill and autocompletion in address-config.xml.

The <Link> element has the following attributes:

Attribute	Description
`lookupOrder`	This optional attribute specifies the order in which to apply this value while performing a lookup. Specifying a lookup order can increase performance somewhat. If you do not specify a `lookupOrder` value, PolicyCenter uses the order that appears in the file.
`toZone`	This required attribute defines a relationship to another zone for PolicyCenter to use if the value of the `<Zone>` attribute `code` is not available for lookup.

For example, the following code defines a relationship between one zone type, county, and several other zone types. PolicyCenter uses these other zone types to look up an address if the address does not contain a county value.

<Zone code="county" fileColumn="4"  regionMatchOrder="2">
  ...
  <Links>
    <Link toZone="zip" lookupOrder="1"/>
    <Link toZone="city" lookupOrder="2"/>
  </Links>
</Zone>

This code has the following meaning:

The first <Link> definition, <Link toZone="zip" lookupOrder="1"/>, creates a link from county to zip. If PolicyCenter cannot look up the address by its county value, then PolicyCenter attempts to look up the address first by zip value.
The second <Link> definition, <Link toZone="city" lookupOrder="2"/>, creates a link from county to city. If PolicyCenter cannot look up the address by its county value or its zip value, it looks up the address by its city value.