Integrated Application Client Credentials cannot view worker assignments via Rest API

Summary:

Hi,

We have configured an integrated application in the cloud console per the instructions here

We are able to retrieve and use a token via client credentials, but when accessing the workers hcm rest service (/hcmRestApi/resources/latest/workers) we are only able to retrieve the parent node i.e. no access to names, workRelationships, assignments.

We have provided the integrated application the same groups as other users who are able to retrieve data when passing their user credentials.

We have created a user with the client_id as its username in the security console and provided it the same roles and still no results provided.