Ensure Amazon Simple Notification Service (SNS) is enabled for CloudFormation stacks

AWS Simple Notification Service (SNS) can be used with AWS CloudFormation to receive notifications about the state of your stack, such as when a resource has been created, deleted, or an update operation has failed. By configuring SNS notifications, you can monitor and respond quickly to any issues that arise.

In AWS Console -

1. Sign in to the AWS Console and open the AWS CloudFormation console, and follow the steps in the setup wizard to create a stack.
2. For Notification options, select Amazon SNS topic.
3. Select the SNS topic that you created to notify the Lambda function.
4. Complete the steps in the setup wizard to create your stack.

In Terraform -

1. In the aws_cloudformation_stack resource, configure notification_arns to include a list of any SNS topic ARNS to use.

References:
https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/Welcome.html
https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/cloudformation_stack#notification_arns