Amazon web services Cloudformation属性验证失败：遇到不支持的属性

我正在尝试创建一个嵌套堆栈，其根堆栈如下所示：

{
    "AWSTemplateFormatVersion": "2010-09-09",

    "Resources": {
        "DynamoDBTable": {
            "Type": "AWS::CloudFormation::Stack",
            "Properties": {
                "Parameters": {
                    "TableName": {
                        "Fn::Sub": "${AWS::StackName}"
                    }
                },
                "TemplateURL": "https://s3.amazonaws.com/my-templates-bucket/dynamodb.json"
            }
        },
        "S3WebsiteReact": {
            "Type": "AWS::CloudFormation::Stack",
            "Properties": {
                "Parameters": {
                    "BucketName": {
                        "Fn::Sub": "${AWS::StackName}-website"
                    }
                },
                "TemplateURL": "https://s3.amazonaws.com/my-templates-bucket/s3-static-website-react.json"
            }
        },
        "S3UploadBucket": {
            "Type": "AWS::CloudFormation::Stack",
            "Properties": {
                "Parameters": {
                    "BucketName": {
                        "Fn::Sub": "${AWS::StackName}-upload"
                    }
                },
                "TemplateURL": "https://s3.amazonaws.com/my-templates-bucket/s3-with-cors.json"
            }
        },
        "Cognito": {
            "Type": "AWS::CloudFormation::Stack",
            "DependsOn": "DynamoDBTable",
            "Properties": {
                "Parameters": {
                    "CognitoUserPoolName": {
                        "Fn::Join" : ["",
                            {
                                "Fn::Split": ["-", {
                                    "Ref": "AWS::StackName"
                                }]
                            }
                        ]
                    }
                },
                "TemplateURL": "https://s3.amazonaws.com/my-templates-bucket/cognito.json"
            }
        },
        "ApiGateway": {
            "Type": "AWS::CloudFormation::Stack",
            "DependsOn": ["DynamoDBTable", "Cognito"],
            "Properties": {
                "Parameters": {
                    "ApiGatewayName": {
                        "Fn::Sub": "${AWS::StackName}-api"
                    },
                    "CognitoUserPoolArn": {
                        "Fn::GetAtt": [ "Cognito", "Outputs.UserPoolArn" ]
                    },
                    "DynamoDBStack": {
                        "Fn::GetAtt": [ "DynamoDBTable", "Outputs.DDBStackName" ]
                    }
                },
                "TemplateURL": "https://s3.amazonaws.com/my-templates-bucket/api-gateway.json"
            }
        },
        "IdentityPool": {
            "Description": "Cognito Identity Pool. Must be created after User Pool and API Gateway.",
            "Type": "AWS::Cognito::IdentityPool",
            "DependsOn": ["Cognito", "ApiGateway", "S3UploadBucket"],
            "Properties": {
                "Parameters": {
                    "AppClientId": {
                        "Fn::GetAtt": [ "Cognito", "Outputs.AppClientId" ]
                    },
                    "UserPoolProviderName": {
                        "Fn::GetAtt": [ "Cognito", "Outputs.ProviderName" ]
                    },
                    "UserPoolName": {
                        "Fn::GetAtt": [ "Cognito", "Outputs.UserPoolName" ]
                    },
                    "UploadBucketName": {
                        "Fn::GetAtt": [ "S3UploadBucket", "Outputs.UploadBucketName" ]
                    },
                    "ApiGatewayId": {
                        "Fn::GetAtt": [ "ApiGateway", "Outputs.ApiGatewayId" ]
                    }
                },
                "TemplateURL": "https://s3.amazonaws.com/my-templates-bucket/identity-pool.json"
            }
        }
    },

    "Outputs": {

    }
}

"Parameters" : {
        "AppClientId": {
            "Description": "ID of the App Client of the Cognito User Pool passed into this stack.",
            "Type": "String"
        },
        "UserPoolProviderName": {
            "Description": "Cognito User Pool Provider name passed into this stack.",
            "Type": "String"
        },
        "UserPoolName": {
            "Description": "Cognito User Pool Name passed into this stack.",
            "Type": "String"
        },
        "UploadBucketName": {
            "Description": "Name of the bucket that is used to upload files to.",
            "Type": "String"
        },
        "ApiGatewayId": {
            "Description": "ID of the API Gateway created for the stack.",
            "Type": "String"
        }
    },

我得到了这个错误：

2019-06-19 14:45:14 UTC-0400 IdentityPool CREATE_属性验证失败：[在{/}:[模板URL，参数]中遇到不支持的属性] 看起来我的标识池堆栈的参数有一些问题。但标识池堆栈参数如下所示：

{
    "AWSTemplateFormatVersion": "2010-09-09",

    "Resources": {
        "DynamoDBTable": {
            "Type": "AWS::CloudFormation::Stack",
            "Properties": {
                "Parameters": {
                    "TableName": {
                        "Fn::Sub": "${AWS::StackName}"
                    }
                },
                "TemplateURL": "https://s3.amazonaws.com/my-templates-bucket/dynamodb.json"
            }
        },
        "S3WebsiteReact": {
            "Type": "AWS::CloudFormation::Stack",
            "Properties": {
                "Parameters": {
                    "BucketName": {
                        "Fn::Sub": "${AWS::StackName}-website"
                    }
                },
                "TemplateURL": "https://s3.amazonaws.com/my-templates-bucket/s3-static-website-react.json"
            }
        },
        "S3UploadBucket": {
            "Type": "AWS::CloudFormation::Stack",
            "Properties": {
                "Parameters": {
                    "BucketName": {
                        "Fn::Sub": "${AWS::StackName}-upload"
                    }
                },
                "TemplateURL": "https://s3.amazonaws.com/my-templates-bucket/s3-with-cors.json"
            }
        },
        "Cognito": {
            "Type": "AWS::CloudFormation::Stack",
            "DependsOn": "DynamoDBTable",
            "Properties": {
                "Parameters": {
                    "CognitoUserPoolName": {
                        "Fn::Join" : ["",
                            {
                                "Fn::Split": ["-", {
                                    "Ref": "AWS::StackName"
                                }]
                            }
                        ]
                    }
                },
                "TemplateURL": "https://s3.amazonaws.com/my-templates-bucket/cognito.json"
            }
        },
        "ApiGateway": {
            "Type": "AWS::CloudFormation::Stack",
            "DependsOn": ["DynamoDBTable", "Cognito"],
            "Properties": {
                "Parameters": {
                    "ApiGatewayName": {
                        "Fn::Sub": "${AWS::StackName}-api"
                    },
                    "CognitoUserPoolArn": {
                        "Fn::GetAtt": [ "Cognito", "Outputs.UserPoolArn" ]
                    },
                    "DynamoDBStack": {
                        "Fn::GetAtt": [ "DynamoDBTable", "Outputs.DDBStackName" ]
                    }
                },
                "TemplateURL": "https://s3.amazonaws.com/my-templates-bucket/api-gateway.json"
            }
        },
        "IdentityPool": {
            "Description": "Cognito Identity Pool. Must be created after User Pool and API Gateway.",
            "Type": "AWS::Cognito::IdentityPool",
            "DependsOn": ["Cognito", "ApiGateway", "S3UploadBucket"],
            "Properties": {
                "Parameters": {
                    "AppClientId": {
                        "Fn::GetAtt": [ "Cognito", "Outputs.AppClientId" ]
                    },
                    "UserPoolProviderName": {
                        "Fn::GetAtt": [ "Cognito", "Outputs.ProviderName" ]
                    },
                    "UserPoolName": {
                        "Fn::GetAtt": [ "Cognito", "Outputs.UserPoolName" ]
                    },
                    "UploadBucketName": {
                        "Fn::GetAtt": [ "S3UploadBucket", "Outputs.UploadBucketName" ]
                    },
                    "ApiGatewayId": {
                        "Fn::GetAtt": [ "ApiGateway", "Outputs.ApiGatewayId" ]
                    }
                },
                "TemplateURL": "https://s3.amazonaws.com/my-templates-bucket/identity-pool.json"
            }
        }
    },

    "Outputs": {

    }
}

"Parameters" : {
        "AppClientId": {
            "Description": "ID of the App Client of the Cognito User Pool passed into this stack.",
            "Type": "String"
        },
        "UserPoolProviderName": {
            "Description": "Cognito User Pool Provider name passed into this stack.",
            "Type": "String"
        },
        "UserPoolName": {
            "Description": "Cognito User Pool Name passed into this stack.",
            "Type": "String"
        },
        "UploadBucketName": {
            "Description": "Name of the bucket that is used to upload files to.",
            "Type": "String"
        },
        "ApiGatewayId": {
            "Description": "ID of the API Gateway created for the stack.",
            "Type": "String"
        }
    },

有趣的是：我尝试自己创建每个堆栈，然后将它们的输出作为参数传递给需要这些参数的堆栈，每个堆栈都成功创建，没有任何问题

我试图查找不受支持的内容，但找不到任何答案。

错误：

[Encountered unsupported properties in {/}: [TemplateURL, Parameters]]

表示不支持这两个属性。与模板中声明的所有其他资源（也使用这两个属性）不同，此资源是AWS:：Cognito:：IdentityPool，而其他资源的类型都是AWS:：CloudFormation:：Stack

---

这两个属性仅在AWS:：CloudFormation:：Stack类型上有效，因此验证错误。

参数和TemplateURL属性在AWS:：CloudFormation:：Stack资源类型上有效，但您的标识池资源是实际的AWS:：Cognito:：IdentityPool类型，而不是堆栈，所以这些属性在该资源类型上无效。@404再一次，您是正确的！如果你想在这里发布你的答案，请让我知道，这样我就可以结束这个问题。谢谢，没问题。作为答案张贴。