SMS 1 to Phone Number / SMS 1 to Phone Number:: This is the phone number that will receive the SMS notification. This is a global service and the notifications can be sent to almost phone in any country. The phone number must contain the full international country code and phone number as it would be dialed internationally. Do not include any leading zeros or other characters and use no spaces. The number must start with the country code. SMS notifications incur a usage charge per message sent even if the message is not received because the number is incorrectly entered or the booking is false or later canceled.Please make sure the number is correct and capable of receiving SMS messages if you use this service.