このエラーメッセージに関する原因と対処に関して説明します。
エラーメッセージ(英語)：
eu ireland region
対処
関連リンク
EU (Ireland) Region - AWS CloudFormation - AWS Documentation
https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/cfn-sample-templates-eu-west-1.html
Asia Pacific (Tokyo) Region - AWS CloudFormation
https://docs.aws.amazon.com/ja_jp/AWSCloudFormation/latest/UserGuide/cfn-sample-templates-ap-northea・・・
AWS in Ireland
https://aws.amazon.com/events/aws-in-ireland/
US West (Oregon) Region - AWS CloudFormation
https://docs.aws.amazon.com/ja_jp/AWSCloudFormation/latest/UserGuide/cfn-sample-templates-us-west-2.・・・
US East (Ohio) Region - AWS CloudFormation
https://docs.aws.amazon.com/ja_jp/AWSCloudFormation/latest/UserGuide/cfn-sample-templates-us-east-2.・・・
AWS CodePipeline Available in EU (Ireland) Region - Amazon.com
https://aws.amazon.com/about-aws/whats-new/2016/06/aws-codepipeline-available-in-eu-ireland-region/
AWS Greengrass Now Available in EU (Ireland) Region - Amazon.com
https://aws.amazon.com/about-aws/whats-new/2018/08/aws-greengrass-now-available-in-eu-ireland/
AWS CodeCommit Available in EU (Ireland) Region - Amazon.com
https://aws.amazon.com/about-aws/whats-new/2016/11/aws-codecommit-available-in-eu-ireland-region/
AWS Region Selection - AWS SDK for .NET - AWS Documentation
https://docs.aws.amazon.com/sdk-for-net/v3/developer-guide/net-dg-region-selection.html
Amazon EC2 Container Registry Available in EU (Ireland)
https://aws.amazon.com/about-aws/whats-new/2016/03/amazon-ec2-container-registry-available-in-eu-ire・・・