If you’re trying to use the Resource Groups Tagging API to find tagged resources in your AWS account, you might run into some confusion when working with resources shared across accounts through AWS Resource Access Manager (RAM). Here’s the simple truth: the GetResources operation in the API is designed to return resources that are tagged and accessible in your account. The general guidance is that the API returns tagged resources in your account’s context, but details about shared resources are not explicitly clarified. You can do this by opening a support case through the AWS Support Center. To do this, follow this link: AWS Support Center.