Adds or updates the policy that is specified as the IAM role's permissions boundary. You can use an Amazon Web Services managed policy or a customer managed policy to set the boundary for a role. Use the boundary to control the maximum permissions that the role can have. Setting a permissions boundary is an advanced feature that can affect the permissions for the role.

You cannot set the boundary for a service-linked role.


Policies used as permissions boundaries do not provide permissions. You must also attach a permissions policy to the role. To learn how the effective permissions for a role are evaluated, see IAM JSON policy evaluation logic in the IAM User Guide.

See also: AWS API Documentation

Request Syntax

response = client.put_role_permissions_boundary(
  • RoleName (string) --


    The name (friendly name, not ARN) of the IAM role for which you want to set the permissions boundary.

  • PermissionsBoundary (string) --


    The ARN of the managed policy that is used to set the permissions boundary for the role.

    A permissions boundary policy defines the maximum permissions that identity-based policies can grant to an entity, but does not grant permissions. Permissions boundaries do not define the maximum permissions that a resource-based policy can grant to an entity. To learn more, see Permissions boundaries for IAM entities in the IAM User Guide .

    For more information about policy types, see Policy types in the IAM User Guide .




  • IAM.Client.exceptions.NoSuchEntityException
  • IAM.Client.exceptions.InvalidInputException
  • IAM.Client.exceptions.UnmodifiableEntityException
  • IAM.Client.exceptions.PolicyNotAttachableException
  • IAM.Client.exceptions.ServiceFailureException