|Refer to [Success and Error Code] (https://docs.cinnox.com/reference/error-codes-and-rate-limit)
|The value will be "null" when you successfully unlabel the enquiry.
|Return the remaining label ID, which is still applied to the enquiry. When you remove all labels to an enquiry, the value is "null".
|The label updated day and time
The removal of labels to the enquiry is successful when no labels remain in the enquiry. Otherwise, if one or more labels still exist in the enquiry, it will result in an unsuccessful request.