| Field | Type | Required | Description |
|---|---|---|---|
accountId | ID! | Yes | |
email | String! | Yes | Invitation recipient email. Only one pending invitation is allowed per email; another creation returns 409 until it is revoked or expires. Creation does not send email or reserve a seat; tier and seat capacity are checked when a new member accepts. |
role | String | No | Invited administrator or member role. Defaults to administrator for existing clients. |