You can find your PreShared Key within the MMS.
We have a full user guide available within our developer zone, and your PreShared Key can be found under Account Admin> Account Settings.
Copyright © 2013 PaymentSense Ltd. All rights reserved. PaymentSense, acting as an agent of First Data Europe Limited, trading as First Data Merchant Solutions, is registered with MasterCard / Visa as an Independent Sales Organisation and Member Service Provider.
Please Email firstname.lastname@example.org