# ListContractualInvestments
<a name="API_billing_ListContractualInvestments"></a>

Lists the investments within a specific investment summary. This operation is read-only and paginated.

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

```
{
   "contractArn": "{{string}}",
   "investmentSummaryId": "{{string}}",
   "maxResults": {{number}},
   "nextToken": "{{string}}"
}
```

## Request Parameters
<a name="API_billing_ListContractualInvestments_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.

 ** [contractArn](#API_billing_ListContractualInvestments_RequestSyntax) **   <a name="awscostmanagement-billing_ListContractualInvestments-request-contractArn"></a>
The Amazon Resource Name (ARN) of the contract that contains the investment summary.  
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

 ** [investmentSummaryId](#API_billing_ListContractualInvestments_RequestSyntax) **   <a name="awscostmanagement-billing_ListContractualInvestments-request-investmentSummaryId"></a>
The identifier of the investment summary whose investments you want to list.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 36.  
Pattern: `[a-zA-Z0-9_\-]+`   
Required: Yes

 ** [maxResults](#API_billing_ListContractualInvestments_RequestSyntax) **   <a name="awscostmanagement-billing_ListContractualInvestments-request-maxResults"></a>
The maximum number of investments to return in a single call. Minimum value of 1, maximum value of 100.  
Type: Integer  
Valid Range: Minimum value of 1. Maximum value of 100.  
Required: No

 ** [nextToken](#API_billing_ListContractualInvestments_RequestSyntax) **   <a name="awscostmanagement-billing_ListContractualInvestments-request-nextToken"></a>
The pagination token that indicates the next set of results to retrieve.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 4095.  
Pattern: `[-a-zA-Z0-9+=/_]+`   
Required: No

## Response Syntax
<a name="API_billing_ListContractualInvestments_ResponseSyntax"></a>

```
{
   "items": [ 
      { ... }
   ],
   "nextToken": "string"
}
```

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

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

The following data is returned in JSON format by the service.

 ** [items](#API_billing_ListContractualInvestments_ResponseSyntax) **   <a name="awscostmanagement-billing_ListContractualInvestments-response-items"></a>
The list of investments for the investment summary.  
Type: Array of [Investment](API_billing_Investment.md) objects

 ** [nextToken](#API_billing_ListContractualInvestments_ResponseSyntax) **   <a name="awscostmanagement-billing_ListContractualInvestments-response-nextToken"></a>
The pagination token to use on subsequent calls to retrieve the next set of results.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 4095.  
Pattern: `[-a-zA-Z0-9+=/_]+` 

## Errors
<a name="API_billing_ListContractualInvestments_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

 ** 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_ListContractualInvestments_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/ListContractualInvestments) 
+  [Amazon SDK for .NET V4](https://docs.amazonaws.cn/goto/DotNetSDKV4/billing-2023-09-07/ListContractualInvestments) 
+  [Amazon SDK for C\+\+](https://docs.amazonaws.cn/goto/SdkForCpp/billing-2023-09-07/ListContractualInvestments) 
+  [Amazon SDK for Go v2](https://docs.amazonaws.cn/goto/SdkForGoV2/billing-2023-09-07/ListContractualInvestments) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/billing-2023-09-07/ListContractualInvestments) 
+  [Amazon SDK for JavaScript V3](https://docs.amazonaws.cn/goto/SdkForJavaScriptV3/billing-2023-09-07/ListContractualInvestments) 
+  [Amazon SDK for Kotlin](https://docs.amazonaws.cn/goto/SdkForKotlin/billing-2023-09-07/ListContractualInvestments) 
+  [Amazon SDK for PHP V3](https://docs.amazonaws.cn/goto/SdkForPHPV3/billing-2023-09-07/ListContractualInvestments) 
+  [Amazon SDK for Python (Boto3)](https://docs.amazonaws.cn/goto/boto3/billing-2023-09-07/ListContractualInvestments) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/billing-2023-09-07/ListContractualInvestments)