already_registered
Already registered · HTTP 409
Example
application/problem+json
{
"type": "https://developers.ledenboek.nl/errors/already_registered",
"title": "Already registered",
"status": 409,
"detail": "This member is already registered for this event.",
"instance": "/v2/members"
}The type field is the same in every language; title and detail follow Accept-Language. Build your error handling on type.