An outbound SMS has changed status and the notificationUrl from the Sms command or Send an SMS request is being invoked. A PerCL response will be ignored.

Request Parameter	Type	Description
requestType	string	Value will be `messageStatus` - An outbound SMS has changed status and the `Sms` command's `notificationUrl` is being invoked.
accountId	string	Account ID associated with your account.
messageId	string	Unique ID for this message, generated by FreeClimb.
callId	string	Unique ID for the Call in the context of which the `Sms` PerCL command was issued.
from	string	Phone number used to initiate the SMS message (in E.164 format).
to	string	Destination number of the SMS message (in E.164 format).
text	string	Body of the SMS message.
direction	string	Value will be `outbound` to indicate an outgoing SMS from FreeClimb.
applicationId	string	ID of the application to which the destination number is assigned. May be null if the originating number is invalid in some way or is not registered to an application.
status	string	The status of the SMS at the time the callback was sent. Valid values are: •`queued` - Message has been accepted by the platform but has not yet been submitted to an SMS provider. •`rejected` - Request to send an SMS failed some basic check, and the platform decided not to send a message. Examples of rejected requests: 1.`from` number doesn't belong to the requesting account 2. `to` number not in service area 3. text message is too long, etc. •`sending` - Message is in the process of being sent to an upstream SMS provider by the platform. •`sent` - Message has been delivered to an upstream SMS provider by the platform. •`failed` - Message was submitted to one or more upstream SMS providers but none of them accepted the message, and no suitable potential providers remain to try the message on. •`expired` - Message failed to send after the carrier repeatedly attempted to deliver the message within a period of time. •`deleted` - Message failed as it was deleted by the carrier. •`unknown` - Message failed to send but the carrier did not provide any reason why.
phoneNumberId	string	ID of the destination phone number.