# Capacity reservation columns
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Capacity reservation columns contain data about capacity reservations that apply to the line item.


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| Column name | Description | Data Type | Nullability | Properties | 
| --- | --- | --- | --- | --- | 
| capacity\$1reservation\$1capacity\$1reservation\$1arn |  **Table configuration:** Added by: INCLUDE CAPACITY RESERVATION DATA The capacity reservation ARN represents the unique identifier of the capacity reservation  | String | Nullable |  This field is not null when a charge is related to a capacity reservation This field is not null when a charge represents the unused portion of a capacity reservation This field is null when a charge is not related to a capacity reservation  | 
| capacity\$1reservation\$1capacity\$1reservation\$1status |  **Table configuration:** Added by: INCLUDE CAPACITY RESERVATION DATA Indicates whether the line item represents either the consumption of the capacity reservation identified in the capacity\$1reservation\$1capacity\$1reservation\$1arn column or when the capacity reservation is unused or when the capacity reservation is reserved.   | String | Nullable |  This field is null when capacity\$1reservation\$1capacity\$1reservation\$1arn is null This field is not null when capacity\$1reservation\$1capacity\$1reservation\$1arn is not null and line\$1item\$1line\$1item\$1type is **Usage** or **SavingsPlannedCoveredUsage** or **DiscountedUsage** This field contains one of the allowed values – Reserved, Used or Unused  | 
| capacity\$1reservation\$1capacity\$1reservation\$1type |  **Table configuration:** Added by: INCLUDE CAPACITY RESERVATION DATA The capacity reservation type field represents the type of capacity reservation purchased. Currently, there are 2 types ODCR and EC2 Capacity Blocks for ML  | String | Nullable |  This field is null when capacity\$1reservation\$1capacity\$1reservation\$1arn is null This field is not null when capacity\$1reservation\$1capacity\$1reservation\$1arn is not null and line\$1item\$1line\$1item\$1type is **Usage** or **SavingsPlannedCoveredUsage** or **DiscountedUsage** This field contains one of the allowed values – ODCR or EC2 Capacity Blocks for ML  |