Exchange your app's Symplur API client credentials for an access token, in standard OAuth 2.0 manner. The access token is needed for authentication with the other API endpoints.
To authenticate with this endpoint, you may either pass your client_id and client_secret in the request body or encode them into an HTTP Basic Auth header.
Symplur only supports OAuth's client_credentials grant, which is suitable for headless environments in which the requested token needs to represent your app as a whole, and not a specific user within your organization.
To authenticate with the other API endpoints, copy the access_token value from a successful response and insert it as a request header for other endpoints, like so: Authentication: Bearer ACCESS_TOKEN.