What is the User ID connected to each contact?
The User ID for each contact is the ID that all registered customers have in your own system.
All customers that can log in to your system, therefore are registered, have a user ID that can be used for indentifying them. This user ID will be displayed in the contact within SAAS First as well. This ensures that your system and SAAS First are connected, and the given customer in SAAS First is your registered user.
For further information on how you can securely hash user IDs, please visit this page.
