Accessing iModels via clientId and client secret

[hvitek]

Can someone help me or point me in the right direction?

On https://developer.bentley.com/, in the myapps section, I created two applications, the first generated as a WebApp, the second generated as a Service.

I'm implementing in itwin.js environment for viewing itwin models

If I log in to the first one through a pop-up window with a user email and password, everything works as it should.

If I log in to the second one through clientid and client secret, the application logs in, the access token is valid, but I get an error "Requested iModel is not available."

[aruniverse]

Make sure you have added your client credential service account as a member of the iTwin you are trying to access.

The account will look like service-{XYZ}@apps.imsoidc.bentley.com