Member must satisfy regular expression pattern: ^[0-9A-Za-z\.\-_]*(?<!\.) about aws-transit-vpc HOT 3 CLOSED

Are you passing the bucket-name when running build-s3-dist.sh? The script will replace %%BUCKET_NAME%% with the user provided bucket name.

./build-s3-dist.sh source-bucket-base-name

Alternatively, the solution can be deployed from https://docs.aws.amazon.com/solutions/latest/cisco-based-transit-vpc/step2.html

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Thanks, hnishar
By understanding was the template create a bucket with random name.
Why do we have to define a source bucket base name?

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./build-s3-dist.sh is the build script for this project. It does two things

1 - Build the lambda ZIP files (transit-vpc-poller.zip & transit-vpc-push-cisco-config.zip), that you need to host inside your S3 bucket i.e. my-bucket under my-bucket/transit-vpc/latest/ folder
2 - Replaces %%BUCKET_NAME%% in the Cloudformation templates with your S3 bucket name i.e. my-bucket, so it can source the Lambdas deployed from Step 1

I'd recommend you take a look at the Implementation Guide for this solution and follow the steps under Deployment section

https://docs.aws.amazon.com/solutions/latest/cisco-based-transit-vpc/welcome.html

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