Create a new project and an External Application

1. Create a new Document Understanding project and retrieve the projectId (found within the project's URL).
   For this example we are using the predefined project^* available in Swagger, identifiable with this projectID: 00000000-0000-0000-0000-000000000000.
   Note:

   The predefined project is not visible in the Document Understanding UI. It provides programatic access to the available public ML models.

2. Create an External Application where the DocumentUnderstanding is used as a Resource and it includes all the available Application Scopes.
3. Initiate a curl call to the Identity Service for obtaining a token.

curl --data \
-urlencode "scope=Du.Digitization"  --data \
-urlencode "client_id={app_id}" --data \
-urlencode "client_secret={app_secret}" --data \
-urlencode "grant_type=client_credentials" https://cloud.uipath.com/identity_/connect/token

Note: The Authorization token has an expiration period. See the following response for the expiration and make sure to renew it before it expires.

{ 
"access_token": "eyJh**CRaKrg", 
"expires_in": 3600, 
"token_type": "Bearer", 
"scope": "Du.Digitization.Api" 
}