# ModifyCapacityReservation
<a name="API_ModifyCapacityReservation"></a>

Modifies the capacity reservation of the specified load balancer.

When modifying capacity reservation, you must include at least one `MinimumLoadBalancerCapacity` or `ResetCapacityReservation`.

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

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

 ** LoadBalancerArn **   
The Amazon Resource Name (ARN) of the load balancer.  
Type: String  
Required: Yes

 ** MinimumLoadBalancerCapacity **   
The minimum load balancer capacity reserved.  
Type: [MinimumLoadBalancerCapacity](API_MinimumLoadBalancerCapacity.md) object  
Required: No

 ** ResetCapacityReservation **   
Resets the capacity reservation.  
Type: Boolean  
Required: No

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

The following elements are returned by the service.

 **CapacityReservationState.member.N**   
The state of the capacity reservation.  
Type: Array of [ZonalCapacityReservationState](API_ZonalCapacityReservationState.md) objects

 ** DecreaseRequestsRemaining **   
The amount of daily capacity decreases remaining.  
Type: Integer

 ** LastModifiedTime **   
The last time the capacity reservation was modified.  
Type: Timestamp

 ** MinimumLoadBalancerCapacity **   
The requested minimum capacity reservation for the load balancer  
Type: [MinimumLoadBalancerCapacity](API_MinimumLoadBalancerCapacity.md) object

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

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

 ** CapacityDecreaseRequestLimitExceeded **   
You've exceeded the daily capacity decrease limit for this reservation.  
HTTP Status Code: 400

 ** CapacityReservationPending **   
There is a pending capacity reservation.  
HTTP Status Code: 400

 ** CapacityUnitsLimitExceeded **   
You've exceeded the capacity units limit.  
HTTP Status Code: 400

 ** InsufficientCapacity **   
There is insufficient capacity to reserve.  
HTTP Status Code: 500

 ** InvalidConfigurationRequest **   
The requested configuration is not valid.  
HTTP Status Code: 400

 ** LoadBalancerNotFound **   
The specified load balancer does not exist.  
HTTP Status Code: 400

 ** OperationNotPermitted **   
This operation is not allowed.  
HTTP Status Code: 400

 ** PriorRequestNotComplete **   
This operation is not allowed while a prior request has not been completed.  
HTTP Status Code: 429

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

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/elasticloadbalancingv2-2015-12-01/ModifyCapacityReservation) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/elasticloadbalancingv2-2015-12-01/ModifyCapacityReservation) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/elasticloadbalancingv2-2015-12-01/ModifyCapacityReservation) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/elasticloadbalancingv2-2015-12-01/ModifyCapacityReservation) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/elasticloadbalancingv2-2015-12-01/ModifyCapacityReservation) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/elasticloadbalancingv2-2015-12-01/ModifyCapacityReservation) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/elasticloadbalancingv2-2015-12-01/ModifyCapacityReservation) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/elasticloadbalancingv2-2015-12-01/ModifyCapacityReservation) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/elasticloadbalancingv2-2015-12-01/ModifyCapacityReservation) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/elasticloadbalancingv2-2015-12-01/ModifyCapacityReservation)