Get an access token for Web API for XConnect
To get access to the Web API for xConnect with tools that let you send
POST requests, such as Postman, you must send an authorization header with an OAuth2 bearer token.
To request this token in, for example, Postman:
In the authorization header, fill out the following form fields to configure the token:
Click Request Token, then click Use Token. This adds the token to the headers of your requests and grants you permission to submit requests to the Web API.