Cause
A channel, version, group or person of the grant is not valid for this company.
What to do
Grant only selectors that exist and are current in the company.
application/problem+json
{
"type": "https://masnet.com/developers/errors/invalid_selector",
"title": "Invalid selector",
"status": 422,
"detail": "...",
"code": "invalid_selector",
"correlation_id": "..."
}