# CreateCapacityReservationBySplitting
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 Create a new Capacity Reservation by splitting the capacity of the source Capacity Reservation. The new Capacity Reservation will have the same attributes as the source Capacity Reservation except for tags. The source Capacity Reservation must be `active` and owned by your Amazon account. 

## 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).

 **ClientToken**   
Unique, case-sensitive identifier that you provide to ensure the idempotency of the request. For more information, see [Ensure Idempotency](https://docs.amazonaws.cn/AWSEC2/latest/APIReference/Run_Instance_Idempotency.html).  
Type: String  
Required: No

 **DryRun**   
Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. If you have the required permissions, the error response is `DryRunOperation`. Otherwise, it is `UnauthorizedOperation`.  
Type: Boolean  
Required: No

 **InstanceCount**   
 The number of instances to split from the source Capacity Reservation.   
Type: Integer  
Required: Yes

 **SourceCapacityReservationId**   
 The ID of the Capacity Reservation from which you want to split the capacity.   
Type: String  
Required: Yes

 **TagSpecification.N**   
 The tags to apply to the new Capacity Reservation.   
Type: Array of [TagSpecification](API_TagSpecification.md) objects  
Required: No

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

 **destinationCapacityReservation**   
 Information about the destination Capacity Reservation.   
Type: [CapacityReservation](API_CapacityReservation.md) object

 **instanceCount**   
 The number of instances in the new Capacity Reservation. The number of instances in the source Capacity Reservation was reduced by this amount.   
Type: Integer

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

 **sourceCapacityReservation**   
 Information about the source Capacity Reservation.   
Type: [CapacityReservation](API_CapacityReservation.md) object

## 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 Amazon SDKs, see the following:
+  [Amazon Command Line Interface V2](https://docs.amazonaws.cn/goto/cli2/ec2-2016-11-15/CreateCapacityReservationBySplitting) 
+  [Amazon SDK for .NET V4](https://docs.amazonaws.cn/goto/DotNetSDKV4/ec2-2016-11-15/CreateCapacityReservationBySplitting) 
+  [Amazon SDK for C\$1\$1](https://docs.amazonaws.cn/goto/SdkForCpp/ec2-2016-11-15/CreateCapacityReservationBySplitting) 
+  [Amazon SDK for Go v2](https://docs.amazonaws.cn/goto/SdkForGoV2/ec2-2016-11-15/CreateCapacityReservationBySplitting) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/ec2-2016-11-15/CreateCapacityReservationBySplitting) 
+  [Amazon SDK for JavaScript V3](https://docs.amazonaws.cn/goto/SdkForJavaScriptV3/ec2-2016-11-15/CreateCapacityReservationBySplitting) 
+  [Amazon SDK for Kotlin](https://docs.amazonaws.cn/goto/SdkForKotlin/ec2-2016-11-15/CreateCapacityReservationBySplitting) 
+  [Amazon SDK for PHP V3](https://docs.amazonaws.cn/goto/SdkForPHPV3/ec2-2016-11-15/CreateCapacityReservationBySplitting) 
+  [Amazon SDK for Python](https://docs.amazonaws.cn/goto/boto3/ec2-2016-11-15/CreateCapacityReservationBySplitting) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/ec2-2016-11-15/CreateCapacityReservationBySplitting)