Repair the IAM identity provider
When you add single sign-on access to an Amazon Web Services account, IAM Identity Center creates an IAM identity provider in each Amazon Web Services account. An IAM identity provider helps keep your Amazon Web Services account secure because you don't have to distribute or embed long-term security credentials, such as access keys, in your application.
If you delete or modify your identity provider, you must manually reapply your user and group assignments. Reapplying your user and group assignments recreates the identity provider. For more information, see: