This page now uses granular permission.

Hi AWS user,

The message you are seing is the result of some new IAM permissions launched beginning of this year: https://aws.amazon.com/blogs/aws-cloud-financial-management/changes-to-aws-billing-cost-management-and-account-consoles-permissions/

Before these were available only very generic IAM policies could be created, bundling many aspects of account settings, billing dashboards, etc. together. AWS has adapted all AWS Managed policies to fit the old behaviour but you might have created your own IAM policies that need to be adapted manually. The steps for doing so are documented in the linked article.

If you don't use you own policies this warning can be ignored. But you should try if all the necessary actions work for you, to be sure