Http Response Status Code: 400
The requested date for service cancellation can not be fulfilled because it is in violation on the cancellation policy of the service. This is usually when the requested `decommission_at` date is outside the notice period. The response fields `decommision_at` denotes the earliest date possible to cancel the service. Your obligation to pay for the service will end on the `charged_until` date. The earliest cancellation date can be queried through the service's `cancellation-policy`.