---
title: "The Initiator method"
slug: "the-initiator-method"
abstract: "Overview of the Initiator method and properties."
---
# The Initiator method

To define the interaction initiator, use the `Initiator()` method.

| Property | Details |
| --- | --- |
| UT SDK method | `Initiator(InteractionInitiator)` |
| Required/optional | Optional |
| Multiple invocations | Multiple invocations are forbidden and cause an *InvalidOperationException* exception |
| Value validation | One of the `InteractionInitiator` enum values:<br><br><ul><li>Contact</li><li>Brand</li><li>Unknown</li></ul> |