Sharing feature is not supported for an account level instance with id ....

Hello.

There are several features that are not available in IAM Identity Center on member or standalone AWS account instances. I think you need to use an AWS Organizations managed account instance to set up multi-account permissions. https://docs.aws.amazon.com/singlesignon/latest/userguide/identity-center-instances.html

Hi,

The list of features available in Identity Center for different setups is available here: https://docs.aws.amazon.com/singlesignon/latest/userguide/identity-center-instances.html

Use it to check if you use case matches the requirements.

Best,

Didier