ReasonCode:
| "UNKNOWN"
| "INTERNAL_ERROR"
| "RATE_LIMITED"
| "RECIPIENT_INVALID_CHANNEL_IDENTITY"
| "RECIPIENT_NOT_REACHABLE"
| "RECIPIENT_NOT_OPTED_IN"
| "OUTSIDE_ALLOWED_SENDING_WINDOW"
| "CHANNEL_FAILURE"
| "CHANNEL_BAD_CONFIGURATION"
| "CHANNEL_CONFIGURATION_MISSING"
| "MEDIA_TYPE_UNSUPPORTED"
| "MEDIA_TOO_LARGE"
| "MEDIA_NOT_REACHABLE"
| "NO_CHANNELS_LEFT"
| "TEMPLATE_NOT_FOUND"
| "TEMPLATE_INSUFFICIENT_PARAMETERS"
| "TEMPLATE_NON_EXISTING_LANGUAGE_OR_VERSION"
| "DELIVERY_TIMED_OUT"
| "DELIVERY_REJECTED_DUE_TO_POLICY"
| "CONTACT_NOT_FOUND"
| "BAD_REQUEST"
| "UNKNOWN_APP"
| "NO_CHANNEL_IDENTITY_FOR_CONTACT"
| "CHANNEL_REJECT"
| "NO_PERMISSION"
| "NO_PROFILE_AVAILABLE"
| "UNSUPPORTED_OPERATION"
| "INACTIVE_CREDENTIAL"
| "MESSAGE_EXPIRED"
| "MESSAGE_SPLIT_REQUIRED"
| "DELIVERY_REPORT_TIME_OUT"