Introduction
Go to Settings > Integrations > API Application Access. The Tenant ID is displayed in the top right corner of the page.
Problem
You need to locate Your Tenant ID in ServiceTitan for setting up integrations.
Solution
Workflow Summary
You can find the Tenant ID for your account by navigating to Settings > Integrations > API Application Access
Search for the Tenant ID in Settings
1. Go to the navigation bar and click Settings 
.
2. Select Integrations > API Application Access.
Your Tenant ID will be displayed in the top right corner of the page.