Surface: Authentication API · application/problem+json Type URI: https://docs.zeroset.com/problems/membership_exists Code: membership_exists HTTP status: 409

The subject already holds a membership in the target organization or workspace.

Resolving it

Update the existing membership rather than creating a second one.

Response shape

{
  "type": "https://docs.zeroset.com/problems/membership_exists",
  "title": "Membership already exists",
  "status": 409,
  "code": "membership_exists",
  "detail": "a human-readable explanation"
}

Every field is required. Clients must reject an authentication problem whose type is not exactly the expansion shown above — the Nebula SDKs do.