cloudform | based imperative way to define AWS CloudFormation templates | AWS library

I started using CloudFormation Modules in my templates as a way to promote reuse and company best practices. I created a couple of modules as a proof-of-concept, which appeared in the CloudFormation Registry in AWS Console as expected.

The problem I'm having is that I would like to delete these test modules and build the real ones. I can't seem to find a way to do this, or even any documentation stating that it's not possible and why not. Is this possible, if so how?

The steps I ran to create/register the module are described here:

Everything works perfectly in the code below if run without the 4 lines starting NotificationConfiguration . I thought this might be because of needing the topic policy before setting notification on the bucket. So have tried to do the initial create without the NotificationConfiguration lines and then add these in and update the stack. But get the error Unable to validate the following destination configurations (Service: Amazon S3; Status Code: 400; Error Code: InvalidArgument; . I've tried things like putting the actual topic arn not using !Ref but no joy. Thanks!

I have created the following cloudformation template to create SNS Topic, Subscription and Cloudwatch rule to send notification if a codebuild is failed. And When i tried creating, it was failing during creation of Cloudwatch rule with the below issue:

When I deploy a cloudformation stack to AWS I got this error message:

Below is the my cloudformation template. I want to convert aws:SourceVpc into list in the resource policy document. I tried with spilt but cft below error.

Invalid policy document. Please check the policy syntax and ensure that Principals are valid. (Service: AmazonApiGateway; Status Code: 400; Error Code: BadRequestException; Request ID: xxxxx; Proxy: null)

Also devl and sdbx have 1 value where as others acnt and acpt have two values in mappings how can do it. Please suggest.

Output should like below. aws:SourceVpc: ["vpc-7830jkd", "vpc-a1236"]

I am using AWS Backup to back up some DynamoDB tables. Using the AWS Backup console to restore the back-ups I am prompted to restore to a new table. This works fine but my tables are deployed using CloudFormation, so I need the restored data in the existing table.

What is the process to get the restored data into the existing table? It looks like there are some third-party tools to copy data between tables but I'm looking for something within AWS itself.

I'm trying to implement a DynamoDB get_item call using https://github.com/aws/aws-sdk-ruby/blob/0465bfacbf87e6bc78c38191961ed860413d85cd/gems/aws-sdk-dynamodb/lib/aws-sdk-dynamodb/table.rb#L697 via our Ruby on Rails app, dr-recommends.

From reviewing this DynamoDB CloudFormation stack that I wrote, I expect the following get_item call to work, so I'm a little lost as to how to proceed.

I am learning to create stacks using cloud formation template, I am trying to create an EC2 instance using cloud formation template with security groups so I can ssh to it as well. My cloud formation template is :

The entire output message I get, irrespective of whether I do it with pip or pip3, or in PowerShell or bash, or with or without --user, is: