Hello all,
I am an admin, with the corresponding role in IT Service Management.
We would like to add Approvers to an issue. Based on field values, an automation will decide, whether to add person A or person B to the approver field. We have set the workflow, such that when an approval is required, the people, added to the approvers field, will get a notification.
Unfortunately, the automation returns "Inactive user", although the user is active and has admin permissions.

Within the issue, I cannot even add an approver manually. It always shows no "matches found". And adding an approver by mail is also not giving the expected result.

I am struggling to get any answer from popular search engines...
So I am hoping anybody can help me 
Best regards,
Michael