Cause
The audience includes people and the permission lacks the people field group.
What to do
Use groups or ask the administrator to grant people.
application/problem+json
{
"type": "https://masnet.com/developers/errors/people_not_granted",
"title": "People without the field group",
"status": 403,
"detail": "...",
"code": "people_not_granted",
"correlation_id": "..."
}