Cause
Creating a definition or a campaign requires can_create in the Surveys grant.
What to do
Ask the administrator to grant can_create.
application/problem+json
{
"type": "https://masnet.com/developers/errors/create_not_granted",
"title": "Create not granted",
"status": 403,
"detail": "...",
"code": "create_not_granted",
"correlation_id": "..."
}