Set Amazon SNS topic attributes using an Amazon SDK

    public static void setTopAttr(SnsClient snsClient, String attribute, String topicArn, String value) {

        try {
            SetTopicAttributesRequest request = SetTopicAttributesRequest.builder()
                .attributeName(attribute)
                .attributeValue(value)
                .topicArn(topicArn)
                .build();

            SetTopicAttributesResponse result = snsClient.setTopicAttributes(request);
            System.out.println("\n\nStatus was " + result.sdkHttpResponse().statusCode() + "\n\nTopic " + request.topicArn()
                + " updated " + request.attributeName() + " to " + request.attributeValue());

        } catch (SnsException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }

Create the client in a separate module and export it.

import  { SNSClient } from "@aws-sdk/client-sns";
// Set the AWS Region.
const REGION = "REGION"; //e.g. "us-east-1"
// Create SNS service object.
const snsClient = new SNSClient({ region: REGION });
export  { snsClient };

Import the SDK and client modules and call the API.

// Import required AWS SDK clients and commands for Node.js
import {SetTopicAttributesCommand } from "@aws-sdk/client-sns";
import {snsClient } from "./libs/snsClient.js";

// Set the parameters
const params = {
  AttributeName: "ATTRIBUTE_NAME", // ATTRIBUTE_NAME
  TopicArn: "TOPIC_ARN", // TOPIC_ARN
  AttributeValue: "NEW_ATTRIBUTE_VALUE", //NEW_ATTRIBUTE_VALUE
};

const run = async () => {
  try {
    const data = await snsClient.send(new SetTopicAttributesCommand(params));
    console.log("Success.",  data);
    return data; // For unit tests.
  } catch (err) {
    console.log("Error", err.stack);
  }
};
run();

suspend fun setTopAttr(attribute: String?, topicArnVal: String?, value: String?) {

    val request = SetTopicAttributesRequest {
        attributeName = attribute
        attributeValue = value
        topicArn = topicArnVal
    }

    SnsClient { region = "us-east-1" }.use { snsClient ->
        snsClient.setTopicAttributes(request)
        println("Topic ${request.topicArn} was updated.")
    }
}

require 'vendor/autoload.php';

use Aws\Sns\SnsClient; 
use Aws\Exception\AwsException;

/**
 * Configure the message delivery status attributes for an Amazon SNS Topic.
 *
 * This code expects that you have AWS credentials set up per:
 * https://docs.aws.amazon.com/sdk-for-php/v3/developer-guide/guide_credentials.html
 */
 
$SnSclient = new SnsClient([
    'profile' => 'default',
    'region' => 'us-east-1',
    'version' => '2010-03-31'
]);
$attribute = 'Policy | DisplayName | DeliveryPolicy';
$value = 'First Topic';
$topic = 'arn:aws:sns:us-east-1:111122223333:MyTopic';

try {
    $result = $SnSclient->setTopicAttributes([
        'AttributeName' => $attribute,
        'AttributeValue' => $value,
        'TopicArn' => $topic,
    ]);
    var_dump($result);
} catch (AwsException $e) {
    // output error message if fails
    error_log($e->getMessage());
} 

require "aws-sdk-sns"  # v2: require 'aws-sdk'

policy  = '{
  "Version":"2008-10-17",
  "Id":"__default_policy_ID",
  "Statement":[{
    "Sid":"__default_statement_ID",
    "Effect":"Allow",
    "Principal":{
      "AWS":"*"
    },
    "Action":["SNS:Publish"],
    "Resource":"' + MY_TOPIC_ARN + '",
    "Condition":{
      "ArnEquals":{
        "AWS:SourceArn":"' + MY_RESOURCE_ARN + '"}
     }
  }]
}'
# Replace us-west-2 with the AWS Region you're using for Amazon SNS.
sns = Aws::SNS::Resource.new(region: "REGION")

# Get topic by ARN
topic = sns.topic()

# Add policy to topic
topic.set_attributes({
  attribute_name: "POLICY_NAME",
  attribute_value: policy
})

    TRY.
        lo_sns->settopicattributes(
            iv_topicarn = iv_topic_arn
            iv_attributename  = iv_attribute_name
            iv_attributevalue = iv_attribute_value
        ).
        MESSAGE 'Set/updated SNS topic attributes.' TYPE 'I'.
      CATCH /aws1/cx_snsnotfoundexception.
        MESSAGE 'Topic does not exist.' TYPE 'E'.
    ENDTRY.