Transactional text messages Failed Turkey numbers

To address the issue of transactional text messages failing to deliver to Turkish numbers (+90), there are several steps you can take to identify and resolve the problem:

Check AWS SNS (Simple Notification Service) Limits and Settings: Ensure that your AWS SNS settings and limits are configured correctly for sending messages to Turkish numbers. AWS has specific guidelines and regulations for different countries, including Turkey.

Verify Number Formatting: Confirm that the phone numbers are correctly formatted according to the E.164 standard. For Turkey, this means the format should be +90XXXXXXXXXX.

Check for Country-Specific Restrictions: Some countries have specific restrictions or requirements for sending SMS messages. Verify if there are any restrictions or additional steps required for sending SMS to Turkish numbers via AWS SNS.

Monitor AWS SNS Delivery Logs: AWS SNS provides delivery status logs that can help you identify the exact reason for the failure. Check the CloudWatch logs for detailed information about the delivery status of your SMS messages.

Go to the CloudWatch console. Navigate to Logs and find the log group associated with your SNS topic. Review the logs for any error messages or delivery issues. Review AWS SNS Service Health: Check the AWS Service Health Dashboard to ensure there are no ongoing issues with the AWS SNS service in the region you are using.

Contact AWS Support: If you have reviewed the above steps and the issue persists, it may be best to contact AWS Support for more detailed assistance. Provide them with specific examples of failed messages, including timestamps and phone numbers (with sensitive information redacted).

Example Code to Check SMS Delivery Status Here is an example of how you can check the delivery status of SMS messages using AWS SNS in Python:

import boto3

sns = boto3.client('sns', region_name='us-east-1')

def check_sms_delivery(phone_number, message):
    response = sns.publish(
        PhoneNumber=phone_number,
        Message=message,
        MessageAttributes={
            'AWS.SNS.SMS.SMSType': {
                'DataType': 'String',
                'StringValue': 'Transactional'
            }
        }
    )
    message_id = response['MessageId']
    print(f"Message sent with ID: {message_id}")

    # Check the status of the message
    response = sns.get_sms_attributes(
        attributes=['DefaultSMSType', 'DeliveryStatusSuccessRate', 'DeliveryStatusRate']
    )
    print(f"Delivery status: {response}")

# Example usage
check_sms_delivery('+905555555555', 'Your verification code is 123456')

Additional Tips Ensure Compliance: Verify that your SMS content and sending practices comply with Turkish regulations. Some countries have strict rules regarding the content and frequency of SMS messages. Alternative Providers: If the issue persists and is critical to your application, consider using an alternative SMS provider with strong support for Turkish numbers. Logs and Monitoring: Implement logging and monitoring to track the delivery status of SMS messages in real time. This can help you quickly identify and address issues as they arise. By following these steps, you should be able to identify and resolve the issue with transactional text messages failing to deliver to Turkish numbers.