numbers.not_assigned
The number is not currently assigned to any workspace; release or reassign is a no-op.
numbers.not_assigned is returned when a release or admin reassign operation targets a number that is not currently assigned to any workspace. This is distinct from numbers.not_found: the number exists in inventory but is unassigned.
The number is available inventory (never claimed or previously released). A release on an unassigned number is a no-op that the platform rejects explicitly.
Verify the number's current status via GET /v1/numbers/{id} or the admin inventory view. Only assigned numbers can be released.
{
"error": {
"code": "numbers.not_assigned",
"message": "number is not currently assigned",
"request_id": "req_01900000abc"
}
}