In uber api facing an issue while using authentication generate api

I am working with authentication token generate uber api.

`

curl -X POST 'https://login.uber.com/oauth/v2/token' \
-d 'client_id=<CLIENT_ID>' \
-d 'client_secret=<CLIENT_SECRET>' \
-d 'grant_type=client_credentials' \
-d 'scope=eats.deliveries direct.organizations'

` I am getting this error. while using this.

error :- `

Array
(
    [error] => invalid_scope
    [error_description] => scope(s) are invalid
)

`

I Try This PHP Authentication Code :--

`

$post = array(
        'client_secret' => $client_secret,
        'client_id' => $client_id,
        'grant_type' => 'client_credentials',
        'scope' => 'eats.deliveries direct.organizations',
        
      );  

`

Error show in 'Scope' Parameters