sourceIdentifier

For CC Managed rules, a predefined identifier from a list. For example, `IAM_PASSWORD_POLICY` is a managed rule. To reference a managed rule, see List of Managed Rules. For CC Custom Lambda rules, the identifier is the Amazon Resource Name (ARN) of the rule's LAMlong function, such as `arn:aws:lambda:us-east-2:123456789012:function:custom_rule_name`. For CC Custom Policy rules, this field will be ignored.