Rest API get single issue giving HTTP 403

Hi All,

We are trying to get the single issue as per the documentation here.

API invoked - https://gitlab.com/api/v4/issues/{issue_iid}

Authorization used - {Personal Access Token}

HTTP Response - HTTP 403 { "message": "403 Forbidden" }

But the same can be accessed through Project->Issue API and getting response.

API invoked - https://gitlab.com/api/v4/projects/{project_id}/issues/{issue_iid}

Authorization used - {Personal Access Token}

Could you let us know the behavior between this 2 API? Also what is the difference between {id} and {iid}?

Note: We are using trial A/C

Thanks,

Mithun