Cause
The company plan does not enable Communications or Surveys, or a campaign with context needs Communications and it is not enabled.
What to do
Check the contracted plan with the company administrator.
application/problem+json
{
"type": "https://masnet.com/developers/errors/module_unavailable",
"title": "Module unavailable",
"status": 403,
"detail": "...",
"code": "module_unavailable",
"correlation_id": "..."
}