Cause
The context publication changed since it was fixed in the campaign. Accepting the new meaning is a human decision.
What to do
Ask a person to revalidate the context in the application.
application/problem+json
{
"type": "https://masnet.com/developers/errors/context_changed",
"title": "Context changed",
"status": 409,
"detail": "...",
"code": "context_changed",
"correlation_id": "..."
}