Service Token Guide
Management and Notifications APIs require a service (access) token for your organization to use when managing your apps.
To create a service token, you'll need a client id and secret.
Sign in to the Data Recipient Hub, navigate to “My company” and select the “API credentials” tab. There, you can generate the client id and secret used with the service token endpoint.
The service token lasts for 24-hours. After it expires, you need to use your client id and secret to generate a new one.