Hi Michael, you’re not doing anything wrong here! I understand you are using GoodData Cloud. The Invite Feature (and the API endpoint) are only enabled when the Org is set up to use the OIDC solution managed by GoodData.
By design, GoodData Cloud is intended to utilize the customer’s own OIDC in Authentication. We provide our OIDC (along with a simple Invite feature, currently still undergoing testing) during the Trial, but it’s intended as a temporary measure until you can have your own set up.
I checked, and your Org is not currently configured to use GoodData’s OIDC. This was done during provisioning, as it is not meant for Prod use. This means that in order to add more users, it would be recommended to first
Set Up Authentication to use your OIDC solution, as explained in the article above.
Then, you’ll be able to add your new users via the APIs, as explained in
this section of our Documentation.
However, if you would like to continue using our OIDC, at least temporarily, so you can add other internal users and start working on development, we can also do that for you. Please let us know if that would be the case!