AWS Cloud Map now allows you to view service instance details and edit custom service instance attributes in the AWS Console. This feature, which was previously available only through the AWS CLI, SDK, or API, provides better visibility into the composition of your services and simplifies updating the metadata associated with cloud resources registered in AWS Cloud Map.

from Recent Announcements: https://aws.amazon.com/about-aws/whats-new/2020/01/aws-cloud-map-supports-editing-custom-service-instance-attributes-in-the-aws-console/