> ## Documentation Index
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> Use this file to discover all available pages before exploring further.

# E164PhoneNumber

> A valid phone number string in the E.164 format.

## Description

A valid phone number string in the E.164 format.

## Used by

* [`matter`](/partner-api/reference/queries/matters/matter) (query)
* [`matters`](/partner-api/reference/queries/matters/matters) (query)