# UpdateInterruptibleCapacityReservationAllocation
<a name="API_UpdateInterruptibleCapacityReservationAllocation"></a>

 Modifies the number of instances allocated to an interruptible reservation, allowing you to add more capacity or reclaim capacity to your source Capacity Reservation. 

## Request Parameters
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The following parameters are for this specific action. For more information about required and optional parameters that are common to all actions, see [Common Query Parameters](CommonParameters.md).

 **CapacityReservationId**   
 The ID of the source Capacity Reservation containing the interruptible allocation to modify.   
Type: String  
Required: Yes

 **DryRun**   
 Checks whether you have the required permissions for the action, without actually making the request, and provides an error response.   
Type: Boolean  
Required: No

 **TargetInstanceCount**   
 The new number of instances to allocate. Enter a higher number to add more capacity to share, or a lower number to reclaim capacity to your source Capacity Reservation.   
Type: Integer  
Required: Yes

## Response Elements
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The following elements are returned by the service.

 **instanceCount**   
 The current number of instances allocated to the interruptible reservation.   
Type: Integer

 **interruptibleCapacityReservationId**   
 The ID of the interruptible Capacity Reservation that was modified.   
Type: String

 **interruptionType**   
 The interruption type for the interruptible reservation.   
Type: String  
Valid Values: `adhoc` 

 **requestId**   
The ID of the request.  
Type: String

 **sourceCapacityReservationId**   
 The ID of the source Capacity Reservation to which capacity was reclaimed or from which capacity was allocated.   
Type: String

 **status**   
 The current status of the allocation (updating during reclamation, active when complete).   
Type: String  
Valid Values: `pending | active | updating | canceling | canceled | failed` 

 **targetInstanceCount**   
 The requested number of instances for the interruptible Capacity Reservation.   
Type: Integer

## Errors
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For information about the errors that are common to all actions, see [Common client error codes](errors-overview.md#CommonErrors).

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS Command Line Interface V2](https://docs.aws.amazon.com/goto/cli2/ec2-2016-11-15/UpdateInterruptibleCapacityReservationAllocation) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/ec2-2016-11-15/UpdateInterruptibleCapacityReservationAllocation) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/ec2-2016-11-15/UpdateInterruptibleCapacityReservationAllocation) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/ec2-2016-11-15/UpdateInterruptibleCapacityReservationAllocation) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/ec2-2016-11-15/UpdateInterruptibleCapacityReservationAllocation) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/ec2-2016-11-15/UpdateInterruptibleCapacityReservationAllocation) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/ec2-2016-11-15/UpdateInterruptibleCapacityReservationAllocation) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/ec2-2016-11-15/UpdateInterruptibleCapacityReservationAllocation) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/ec2-2016-11-15/UpdateInterruptibleCapacityReservationAllocation) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/ec2-2016-11-15/UpdateInterruptibleCapacityReservationAllocation)