---
title: "Validation | GTX Contacts"
slug: "contact-validation"
description: "Learn about Contact Validation in Marlin GTX trusted automotive software by Megabus."
updated: 2025-09-22T04:03:25Z
published: 2025-09-22T04:03:25Z
canonical: "help.megabus.com.au/contact-validation"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.megabus.com.au/llms.txt
> Use this file to discover all available pages before exploring further.

# Contact Validation

{{snippet.legacy inform}}

{{variable.GTX Bold}} enables third party validation of mobile numbers and email addresses to ensure that customer contact details are accurate.

On a Planner item, when entering Autotracker details, or in an Autotracker Enquiry, when you tab off the Mobile or Email fields the data you entered will be validated using a third party service.  

For a moment or two you will see a popup.

<ss title="Marlin GTX Validation Popup" alt="Marlin GTX Validation Popup">![image.png](https://cdn.document360.io/d7282b31-60c4-41e6-bf87-3f684d4da049/Images/Documentation/image-59S196EJ.png)</ss>

After the validation you will see symbols to indicate whether the data was validated and whether the mobile number or email address exists.

<ss title="Marlin GTX Validation Symbols" alt="Marlin GTX Validation Symbols">![image.png](https://cdn.document360.io/d7282b31-60c4-41e6-bf87-3f684d4da049/Images/Documentation/image-6ARCAPGE.png)</ss>

Hovering your mouse pointer over the symbol will display an explanation such as the following:

![image.png](https://cdn.document360.io/d7282b31-60c4-41e6-bf87-3f684d4da049/Images/Documentation/image-9TSLC3UW.png) Mobile Invalid, or Email: Domain does not exist or has no reachable mail exchangers  
![image.png](https://cdn.document360.io/d7282b31-60c4-41e6-bf87-3f684d4da049/Images/Documentation/image-CIOUZQD8.png) Mobile Not Validated, or Email not validated  
![image.png](https://cdn.document360.io/d7282b31-60c4-41e6-bf87-3f684d4da049/Images/Documentation/image-6JIZ7W1D.png) Email last validated on 24/3/2016, or Mobile last validated on 24/3/2016 

Once the data has been validated, it will not be validated again unless you change the data or the original validation failed and you click in that field and tab off it again to re-validate.