# CapacityReservationTopology
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Information about the Capacity Reservation topology.

## Contents
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 ** availabilityZone **   
The name of the Availability Zone or Local Zone that the Capacity Reservation is in.  
Type: String  
Required: No

 ** availabilityZoneId **   
The ID of the Availability Zone or Local Zone that the Capacity Reservation is in.  
Type: String  
Required: No

 ** capacityBlockId **   
The ID of the Capacity Block. This parameter is only supported for UltraServer instances and identifies instances within the UltraServer domain.  
Type: String  
Required: No

 ** capacityReservationId **   
The ID of the Capacity Reservation.  
Type: String  
Required: No

 ** groupName **   
The name of the placement group that the Capacity Reservation is in.  
Type: String  
Required: No

 ** instanceType **   
The instance type.  
Type: String  
Required: No

 ** NetworkNodeSet.N **   
The network nodes. The nodes are hashed based on your account. Capacity Reservations from different accounts running under the same server will return a different hashed list of strings.  
The value is `null` or empty if:  
+ The instance type is not supported.
+ The Capacity Reservation is in a state other than `active` or `pending`.
Type: Array of strings  
Required: No

 ** state **   
The current state of the Capacity Reservation. For the list of possible states, see [DescribeCapacityReservations](https://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_DescribeCapacityReservations.html).  
Type: String  
Required: No

## 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 SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/ec2-2016-11-15/CapacityReservationTopology) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/ec2-2016-11-15/CapacityReservationTopology) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/ec2-2016-11-15/CapacityReservationTopology)