# CancelContractualInvestmentAttestation
<a name="API_billing_CancelContractualInvestmentAttestation"></a>

Cancels a contractual investment attestation. This operation is idempotent, so retrying is safe. You can cancel an attestation only while it is still pending (its `isCancellable` value is `true`).

## Request Syntax
<a name="API_billing_CancelContractualInvestmentAttestation_RequestSyntax"></a>

```
{
   "attestationId": "{{string}}",
   "contractArn": "{{string}}",
   "reason": "{{string}}"
}
```

## Request Parameters
<a name="API_billing_CancelContractualInvestmentAttestation_RequestParameters"></a>

For information about the parameters that are common to all actions, see [Common Parameters](CommonParameters.md).

The request accepts the following data in JSON format.

 ** [attestationId](#API_billing_CancelContractualInvestmentAttestation_RequestSyntax) **   <a name="awscostmanagement-billing_CancelContractualInvestmentAttestation-request-attestationId"></a>
The identifier of the investment attestation to cancel.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 36.  
Pattern: `[a-zA-Z0-9_\-]+`   
Required: Yes

 ** [contractArn](#API_billing_CancelContractualInvestmentAttestation_RequestSyntax) **   <a name="awscostmanagement-billing_CancelContractualInvestmentAttestation-request-contractArn"></a>
The Amazon Resource Name (ARN) of the contract that contains the attested investment.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 500.  
Pattern: `arn:aws[a-z-]*:billing::[0-9]{12}:contract/[a-zA-Z0-9_\+=\.\@-]{0,70}[a-zA-Z0-9]`   
Required: Yes

 ** [reason](#API_billing_CancelContractualInvestmentAttestation_RequestSyntax) **   <a name="awscostmanagement-billing_CancelContractualInvestmentAttestation-request-reason"></a>
The reason for the cancellation. This value can be 1 to 80 characters.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 80.  
Required: Yes

## Response Elements
<a name="API_billing_CancelContractualInvestmentAttestation_ResponseElements"></a>

If the action is successful, the service sends back an HTTP 200 response with an empty HTTP body.

## Errors
<a name="API_billing_CancelContractualInvestmentAttestation_Errors"></a>

For information about the errors that are common to all actions, see [Common Error Types](CommonErrors.md).

 ** AccessDeniedException **   
You don't have sufficient access to perform this action.  
HTTP Status Code: 400

 ** ConflictException **   
 The requested operation would cause a conflict with the current state of a service resource associated with the request. Resolve the conflict before retrying this request.     
 ** resourceId **   
 The identifier for the service resource associated with the request.   
 ** resourceType **   
 The type of resource associated with the request. 
HTTP Status Code: 400

 ** InternalServerException **   
The request processing failed because of an unknown error, exception, or failure.   
HTTP Status Code: 500

 ** ResourceNotFoundException **   
 The specified ARN in the request doesn't exist.     
 ** resourceId **   
 Value is a list of resource IDs that were not found.   
 ** resourceType **   
 Value is the type of resource that was not found. 
HTTP Status Code: 400

 ** ThrottlingException **   
The request was denied due to request throttling.   
HTTP Status Code: 400

 ** ValidationException **   
The input fails to satisfy the constraints specified by an Amazon Web Services service.     
 ** fieldList **   
The input fails to satisfy the constraints specified by an Amazon service.  
 ** reason **   
The input fails to satisfy the constraints specified by an Amazon service.
HTTP Status Code: 400

## See Also
<a name="API_billing_CancelContractualInvestmentAttestation_SeeAlso"></a>

For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon Command Line Interface V2](https://docs.amazonaws.cn/goto/cli2/billing-2023-09-07/CancelContractualInvestmentAttestation) 
+  [Amazon SDK for .NET V4](https://docs.amazonaws.cn/goto/DotNetSDKV4/billing-2023-09-07/CancelContractualInvestmentAttestation) 
+  [Amazon SDK for C\+\+](https://docs.amazonaws.cn/goto/SdkForCpp/billing-2023-09-07/CancelContractualInvestmentAttestation) 
+  [Amazon SDK for Go v2](https://docs.amazonaws.cn/goto/SdkForGoV2/billing-2023-09-07/CancelContractualInvestmentAttestation) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/billing-2023-09-07/CancelContractualInvestmentAttestation) 
+  [Amazon SDK for JavaScript V3](https://docs.amazonaws.cn/goto/SdkForJavaScriptV3/billing-2023-09-07/CancelContractualInvestmentAttestation) 
+  [Amazon SDK for Kotlin](https://docs.amazonaws.cn/goto/SdkForKotlin/billing-2023-09-07/CancelContractualInvestmentAttestation) 
+  [Amazon SDK for PHP V3](https://docs.amazonaws.cn/goto/SdkForPHPV3/billing-2023-09-07/CancelContractualInvestmentAttestation) 
+  [Amazon SDK for Python (Boto3)](https://docs.amazonaws.cn/goto/boto3/billing-2023-09-07/CancelContractualInvestmentAttestation) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/billing-2023-09-07/CancelContractualInvestmentAttestation)