AWS SNS Invalid parameter phone number - php

Question

i am trying to learn aws sns service to send sms from my web application.
I am working on localhost.
$params = array(
'credentials' => array(
'key' => 'iam_key',
'secret' => 'iam_secret',
),
'region' => 'ap-south-1', // < your aws from SNS Topic region
'version' => 'latest',
'http' => ['verify'=>false]
);
$sns = \Aws\Sns\SnsClient::factory($params);
$msgattributes = [
'AWS.SNS.SMS.SenderID' => [
'DataType' => 'String',
'StringValue' => 'Klassroom',
],
'AWS.SNS.SMS.SMSType' => [
'DataType' => 'String',
'StringValue' => 'Transactional',
]
];
$payload = array(
'Message' => "HK test",
"PhoneNumber" => "1234567890",
'MessageAttributes' => $msgattributes
);
$result = $sns->publish($payload);
i want to send sms directly on number. this code is giving this error
Fatal error: Uncaught exception 'Aws\Sns\Exception\SnsException' with message 'Error executing "Publish" on "https://sns.ap-south-1.amazonaws.com"; AWS HTTP error: Client error: POST https://sns.ap-south-1.amazonaws.com resulted in a 400 Bad Request response: Sender InvalidPara (truncated...) InvalidParameter (client): Invalid parameter: PhoneNumber Reason: [phone] is not valid to publish to - Sender InvalidParameter Invalid parameter: PhoneNumber Reason: [phone] is not valid to publish to 13e181c2-a20f-5e77-9c8e-d38c55c50266 ' exception 'GuzzleHttp\Exception\ClientException' with message 'Client error: POST https://sns.ap-south-1.amazonaws.com resulted in a 400 Bad Request
i don't know why....

Answer 1

I believe a phone number for AWS has to include the country code.
For instance if my phone number is [phone] it would be [phone] (for US)

Answer 2

I had the exact same issue even though I called the API with a valid phone number prefixed with correct country code (for example +57xxxxxxxxxx).
Then I figured out after running through some threads on the internet that it was only because of the incorrect REGION_CODE (for example us-west-1 instead of us-east-1) used during the instantiation of SNSClient class.
#Bean
public AmazonSNS snsClient() {
return AmazonSNSClientBuilder.standard().withRegion("us-east-1").withCredentials(new AWSStaticCredentialsProvider(credentials())).build();
}
Refer to the link to find the right region code for your case.

Answer 3

You need to use the region that supported SMS for AWS SNS.
More information: https://docs.aws.amazon.com/sns/latest/dg/sms_supported-countries.html

Answer 4

SMS Sandbox Mode
When you start off using SNS for the first time for sending SMS, it starts in the so called 'Sandbox Mode'.
In this mode, you must verify the phone numbers that you intend to use.
If you are using SMS in Sandbox Mode and try to send an SMS via SNS to an unverified number, you will get the error
This prevents unsolicited text messaging.
If you try to create an SMS subscription to an SNS topic without a phone number that's been verified you will indeed receive the error:
Enter a valid mobile number
The phone number is valid. You just need to verify it first, as described above, before you can create this subscription in SNS
Of course, the same principle applies, when you're trying to achieve this via code.