SQS subscription to cross-region SNS topic not working via addSubscription

When I try to subscribe an SQS queue in one account to an SNS topic in another account and another region using topic.addSubscription(), I get error “Invalid parameter: TopicArn.” This works when adding a subscription to a the same account/region or a different account but same region. But it fails when subscribing to a different account and region:

topicInRegionA.addSubscription(new SqsSubscription(queueInRegionB));

I thought this was supposed to be fixed by #3842?

Reproduction Steps

1. Try to subscribe an SQS queue to a topic in another region using addSubscription()

Error Log

1/13 | 5:11:07 PM | CREATE_FAILED        | AWS::SNS::Subscription          | MyQueue/MyServicealphauswest2MyTopic915AE08F (MyQueueMyServicealphauswest2MyTopic915AE08F58613436) Invalid parameter: TopicArn (Service: AmazonSNS; Status Code: 400; Error Code: InvalidParameter; Request ID: ...)
        new Subscription (...CDK/node_modules/@aws-cdk/aws-sns/lib/subscription.js:29:9)
        \_ Topic.addSubscription (...CDK/node_modules/@aws-cdk/aws-sns/lib/topic-base.js:23:9)
        \_ AppStack.bindCustomComponents (...CDK/dist/lib/custom/app-stack.js:48:43)
        \_ Object.<anonymous> (...CDK/dist/lib/app.js:66:18)
        ...

Environment

• CLI Version : 1.30.0 (build 4f54ff7)
• OS : Red Hat variant
• Language : TypeScript

This is 🐛 Bug Report

[jacoblangston]

This is still an issue.

Steps to reproduce:

• Create an SNS topic in an account in us-east-1
• In a CDK project, configured for a different account and region (us-west-2), create a queue, and subscribe to the SNS Topic.

This is the CDK code I’m using:

  const queue = new sqs.CfnQueue(this, 'MyQueue', {
      queueName: 'MyQueue',
      kmsMasterKeyId: cmk.keyId,
      visibilityTimeout: 900,
    });
    
  const topicSubscription = new sns.CfnSubscription(this, 'MySubscription', {
    topicArn: 'arn-for-sns-topic',
    region: scopedAws.region,
    endpoint: queue.attrArn,
    protocol: 'sqs',
  });

[github-actions[bot]]

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