Module types

Data structures used by operation inputs/outputs.

Modules

builders

Builders

error

Error types that Amazon DynamoDB can respond with.

Structs

ArchivalSummary

Contains details of a table archival operation.

AttributeDefinition

Represents an attribute for describing the schema for the table and indexes.

AttributeValueUpdate

For the UpdateItem operation, represents the attributes to be modified, the action to perform on each, and the new value for each.

You cannot use UpdateItem to update any primary key attributes. Instead, you will need to delete the item, and then use PutItem to create a new item with new attributes.

Attribute values cannot be null; string and binary type attributes must have lengths greater than zero; and set type attributes must not be empty. Requests with empty values will be rejected with a ValidationException exception.

AutoScalingPolicyDescription

Represents the properties of the scaling policy.

AutoScalingPolicyUpdate

Represents the auto scaling policy to be modified.

AutoScalingSettingsDescription

Represents the auto scaling settings for a global table or global secondary index.

AutoScalingSettingsUpdate

Represents the auto scaling settings to be modified for a global table or global secondary index.

AutoScalingTargetTrackingScalingPolicyConfigurationDescription

Represents the properties of a target tracking scaling policy.

AutoScalingTargetTrackingScalingPolicyConfigurationUpdate

Represents the settings of a target tracking scaling policy that will be modified.

BackupDescription

Contains the description of the backup created for the table.

BackupDetails

Contains the details of the backup created for the table.

BackupSummary

Contains details for the backup.

BatchStatementError

An error associated with a statement in a PartiQL batch that was run.

BatchStatementRequest

A PartiQL batch statement request.

BatchStatementResponse

A PartiQL batch statement response..

BillingModeSummary

Contains the details for the read/write capacity mode. This page talks about PROVISIONED and PAY_PER_REQUEST billing modes. For more information about these modes, see Read/write capacity mode.

You may need to switch to on-demand mode at least once in order to return a BillingModeSummary response.

CancellationReason

An ordered list of errors for each item in the request which caused the transaction to get cancelled. The values of the list are ordered according to the ordering of the TransactWriteItems request parameter. If no error occurred for the associated item an error with a Null code and Null message will be present.

Capacity

Represents the amount of provisioned throughput capacity consumed on a table or an index.

Condition

Represents the selection criteria for a Query or Scan operation:

• For a Query operation, Condition is used for specifying the KeyConditions to use when querying a table or an index. For KeyConditions, only the following comparison operators are supported:

  EQ | LE | LT | GE | GT | BEGINS_WITH | BETWEEN

  Condition is also used in a QueryFilter, which evaluates the query results and returns only the desired values.

• For a Scan operation, Condition is used in a ScanFilter, which evaluates the scan results and returns only the desired values.

ConditionCheck

Represents a request to perform a check that an item exists or to check the condition of specific attributes of the item.

ConsumedCapacity

The capacity units consumed by an operation. The data returned includes the total provisioned throughput consumed, along with statistics for the table and any indexes involved in the operation. ConsumedCapacity is only returned if the request asked for it. For more information, see Provisioned capacity mode in the Amazon DynamoDB Developer Guide.

ContinuousBackupsDescription

Represents the continuous backups and point in time recovery settings on the table.

ContributorInsightsSummary

Represents a Contributor Insights summary entry.

CreateGlobalSecondaryIndexAction

Represents a new global secondary index to be added to an existing table.

CreateReplicaAction

Represents a replica to be added.

CreateReplicationGroupMemberAction

Represents a replica to be created.

CsvOptions

Processing options for the CSV file being imported.

Delete

Represents a request to perform a DeleteItem operation.

DeleteGlobalSecondaryIndexAction

Represents a global secondary index to be deleted from an existing table.

DeleteReplicaAction

Represents a replica to be removed.

DeleteReplicationGroupMemberAction

Represents a replica to be deleted.

DeleteRequest

Represents a request to perform a DeleteItem operation on an item.

EnableKinesisStreamingConfiguration

Enables setting the configuration for Kinesis Streaming.

Endpoint

An endpoint information details.

ExpectedAttributeValue

Represents a condition to be compared with an attribute value. This condition can be used with DeleteItem, PutItem, or UpdateItem operations; if the comparison evaluates to true, the operation succeeds; if not, the operation fails. You can use ExpectedAttributeValue in one of two different ways:

• Use AttributeValueList to specify one or more values to compare against an attribute. Use ComparisonOperator to specify how you want to perform the comparison. If the comparison evaluates to true, then the conditional operation succeeds.

• Use Value to specify a value that DynamoDB will compare against an attribute. If the values match, then ExpectedAttributeValue evaluates to true and the conditional operation succeeds. Optionally, you can also set Exists to false, indicating that you do not expect to find the attribute value in the table. In this case, the conditional operation succeeds only if the comparison evaluates to false.

Value and Exists are incompatible with AttributeValueList and ComparisonOperator. Note that if you use both sets of parameters at once, DynamoDB will return a ValidationException exception.

ExportDescription

Represents the properties of the exported table.

ExportSummary

Summary information about an export task.

FailureException

Represents a failure a contributor insights operation.

Get

Specifies an item and related attribute values to retrieve in a TransactGetItem object.

GlobalSecondaryIndex

Represents the properties of a global secondary index.

GlobalSecondaryIndexAutoScalingUpdate

Represents the auto scaling settings of a global secondary index for a global table that will be modified.

GlobalSecondaryIndexDescription

Represents the properties of a global secondary index.

GlobalSecondaryIndexInfo

Represents the properties of a global secondary index for the table when the backup was created.

GlobalSecondaryIndexUpdate

Represents one of the following:

• A new global secondary index to be added to an existing table.

• New provisioned throughput parameters for an existing global secondary index.

• An existing global secondary index to be removed from an existing table.

GlobalSecondaryIndexWarmThroughputDescription

The description of the warm throughput value on a global secondary index.

GlobalTable

Represents the properties of a global table.

GlobalTableDescription

Contains details about the global table.

GlobalTableGlobalSecondaryIndexSettingsUpdate

Represents the settings of a global secondary index for a global table that will be modified.

ImportSummary

Summary information about the source file for the import.

ImportTableDescription

Represents the properties of the table being imported into.

IncrementalExportSpecification

Optional object containing the parameters specific to an incremental export.

InputFormatOptions

The format options for the data that was imported into the target table. There is one value, CsvOption.

ItemCollectionMetrics

Information about item collections, if any, that were affected by the operation. ItemCollectionMetrics is only returned if the request asked for it. If the table does not have any local secondary indexes, this information is not returned in the response.

ItemResponse

Details for the requested item.

KeySchemaElement

Represents a single element of a key schema. A key schema specifies the attributes that make up the primary key of a table, or the key attributes of an index.

A KeySchemaElement represents exactly one attribute of the primary key. For example, a simple primary key would be represented by one KeySchemaElement (for the partition key). A composite primary key would require one KeySchemaElement for the partition key, and another KeySchemaElement for the sort key.

A KeySchemaElement must be a scalar, top-level attribute (not a nested attribute). The data type must be one of String, Number, or Binary. The attribute cannot be nested within a List or a Map.

KeysAndAttributes

Represents a set of primary keys and, for each key, the attributes to retrieve from the table.

For each primary key, you must provide all of the key attributes. For example, with a simple primary key, you only need to provide the partition key. For a composite primary key, you must provide both the partition key and the sort key.

KinesisDataStreamDestination

Describes a Kinesis data stream destination.

LocalSecondaryIndex

Represents the properties of a local secondary index.

LocalSecondaryIndexDescription

Represents the properties of a local secondary index.

LocalSecondaryIndexInfo

Represents the properties of a local secondary index for the table when the backup was created.

OnDemandThroughput

Sets the maximum number of read and write units for the specified on-demand table. If you use this parameter, you must specify MaxReadRequestUnits, MaxWriteRequestUnits, or both.

OnDemandThroughputOverride

Overrides the on-demand throughput settings for this replica table. If you don't specify a value for this parameter, it uses the source table's on-demand throughput settings.

ParameterizedStatement

Represents a PartiQL statement that uses parameters.

PointInTimeRecoveryDescription

The description of the point in time settings applied to the table.

PointInTimeRecoverySpecification

Represents the settings used to enable point in time recovery.

Projection

Represents attributes that are copied (projected) from the table into an index. These are in addition to the primary key attributes and index key attributes, which are automatically projected.

ProvisionedThroughput

Represents the provisioned throughput settings for the specified global secondary index. You must use ProvisionedThroughput or OnDemandThroughput based on your table’s capacity mode.

For current minimum and maximum provisioned throughput values, see Service, Account, and Table Quotas in the Amazon DynamoDB Developer Guide.

ProvisionedThroughputDescription

Represents the provisioned throughput settings for the table, consisting of read and write capacity units, along with data about increases and decreases.

ProvisionedThroughputOverride

Replica-specific provisioned throughput settings. If not specified, uses the source table's provisioned throughput settings.

Put

Represents a request to perform a PutItem operation.

PutRequest

Represents a request to perform a PutItem operation on an item.

Replica

Represents the properties of a replica.

ReplicaAutoScalingDescription

Represents the auto scaling settings of the replica.

ReplicaAutoScalingUpdate

Represents the auto scaling settings of a replica that will be modified.

ReplicaDescription

Contains the details of the replica.

ReplicaGlobalSecondaryIndex

Represents the properties of a replica global secondary index.

ReplicaGlobalSecondaryIndexAutoScalingDescription

Represents the auto scaling configuration for a replica global secondary index.

ReplicaGlobalSecondaryIndexAutoScalingUpdate

Represents the auto scaling settings of a global secondary index for a replica that will be modified.

ReplicaGlobalSecondaryIndexDescription

Represents the properties of a replica global secondary index.

ReplicaGlobalSecondaryIndexSettingsDescription

Represents the properties of a global secondary index.

ReplicaGlobalSecondaryIndexSettingsUpdate

Represents the settings of a global secondary index for a global table that will be modified.

ReplicaSettingsDescription

Represents the properties of a replica.

ReplicaSettingsUpdate

Represents the settings for a global table in a Region that will be modified.

ReplicaUpdate

Represents one of the following:

• A new replica to be added to an existing global table.

• New parameters for an existing replica.

• An existing replica to be removed from an existing global table.

ReplicationGroupUpdate

Represents one of the following:

• A new replica to be added to an existing regional table or global table. This request invokes the CreateTableReplica action in the destination Region.

• New parameters for an existing replica. This request invokes the UpdateTable action in the destination Region.

• An existing replica to be deleted. The request invokes the DeleteTableReplica action in the destination Region, deleting the replica and all if its items in the destination Region.

When you manually remove a table or global table replica, you do not automatically remove any associated scalable targets, scaling policies, or CloudWatch alarms.

RestoreSummary

Contains details for the restore.

S3BucketSource

The S3 bucket that is being imported from.

SourceTableDetails

Contains the details of the table when the backup was created.

SourceTableFeatureDetails

Contains the details of the features enabled on the table when the backup was created. For example, LSIs, GSIs, streams, TTL.

SseDescription

The description of the server-side encryption status on the specified table.

SseSpecification

Represents the settings used to enable server-side encryption.

StreamSpecification

Represents the DynamoDB Streams configuration for a table in DynamoDB.

TableAutoScalingDescription

Represents the auto scaling configuration for a global table.

TableClassSummary

Contains details of the table class.

TableCreationParameters

The parameters for the table created as part of the import operation.

TableDescription

Represents the properties of a table.

TableWarmThroughputDescription

Represents the warm throughput value (in read units per second and write units per second) of the table. Warm throughput is applicable for DynamoDB Standard-IA tables and specifies the minimum provisioned capacity maintained for immediate data access.

Tag

Describes a tag. A tag is a key-value pair. You can add up to 50 tags to a single DynamoDB table.

Amazon Web Services-assigned tag names and values are automatically assigned the aws: prefix, which the user cannot assign. Amazon Web Services-assigned tag names do not count towards the tag limit of 50. User-assigned tag names have the prefix user: in the Cost Allocation Report. You cannot backdate the application of a tag.

For an overview on tagging DynamoDB resources, see Tagging for DynamoDB in the Amazon DynamoDB Developer Guide.

TimeToLiveDescription

The description of the Time to Live (TTL) status on the specified table.

TimeToLiveSpecification

Represents the settings used to enable or disable Time to Live (TTL) for the specified table.

TransactGetItem

Specifies an item to be retrieved as part of the transaction.

TransactWriteItem

A list of requests that can perform update, put, delete, or check operations on multiple items in one or more tables atomically.

Update

Represents a request to perform an UpdateItem operation.

UpdateGlobalSecondaryIndexAction

Represents the new provisioned throughput settings to be applied to a global secondary index.

UpdateKinesisStreamingConfiguration

Enables updating the configuration for Kinesis Streaming.

UpdateReplicationGroupMemberAction

Represents a replica to be modified.

WarmThroughput

Provides visibility into the number of read and write operations your table or secondary index can instantaneously support. The settings can be modified using the UpdateTable operation to meet the throughput requirements of an upcoming peak event.

WriteRequest

Represents an operation to perform - either DeleteItem or PutItem. You can only request one of these operations, not both, in a single WriteRequest. If you do need to perform both of these operations, you need to provide two separate WriteRequest objects.

Enums

ApproximateCreationDateTimePrecision

When writing a match expression against ApproximateCreationDateTimePrecision, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

AttributeAction

When writing a match expression against AttributeAction, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

AttributeValue

Represents the data for an attribute.

Each attribute value is described as a name-value pair. The name is the data type, and the value is the data itself.

For more information, see Data Types in the Amazon DynamoDB Developer Guide.

BackupStatus

When writing a match expression against BackupStatus, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

BackupType

When writing a match expression against BackupType, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

BackupTypeFilter

When writing a match expression against BackupTypeFilter, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

BatchStatementErrorCodeEnum

When writing a match expression against BatchStatementErrorCodeEnum, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

BillingMode

When writing a match expression against BillingMode, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

ComparisonOperator

When writing a match expression against ComparisonOperator, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

ConditionalOperator

When writing a match expression against ConditionalOperator, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

ContinuousBackupsStatus

When writing a match expression against ContinuousBackupsStatus, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

ContributorInsightsAction

When writing a match expression against ContributorInsightsAction, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

ContributorInsightsStatus

When writing a match expression against ContributorInsightsStatus, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

DestinationStatus

When writing a match expression against DestinationStatus, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

ExportFormat

When writing a match expression against ExportFormat, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

ExportStatus

When writing a match expression against ExportStatus, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

ExportType

When writing a match expression against ExportType, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

ExportViewType

When writing a match expression against ExportViewType, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

GlobalTableStatus

When writing a match expression against GlobalTableStatus, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

ImportStatus

When writing a match expression against ImportStatus, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

IndexStatus

When writing a match expression against IndexStatus, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

InputCompressionType

When writing a match expression against InputCompressionType, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

InputFormat

When writing a match expression against InputFormat, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

KeyType

When writing a match expression against KeyType, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

MultiRegionConsistency

When writing a match expression against MultiRegionConsistency, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

PointInTimeRecoveryStatus

When writing a match expression against PointInTimeRecoveryStatus, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

ProjectionType

When writing a match expression against ProjectionType, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

ReplicaStatus

When writing a match expression against ReplicaStatus, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

ReturnConsumedCapacity

When writing a match expression against ReturnConsumedCapacity, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

ReturnItemCollectionMetrics

When writing a match expression against ReturnItemCollectionMetrics, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

ReturnValue

When writing a match expression against ReturnValue, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

ReturnValuesOnConditionCheckFailure

When writing a match expression against ReturnValuesOnConditionCheckFailure, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

S3SseAlgorithm

When writing a match expression against S3SseAlgorithm, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

ScalarAttributeType

When writing a match expression against ScalarAttributeType, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

Select

When writing a match expression against Select, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

SseStatus

When writing a match expression against SseStatus, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

SseType

When writing a match expression against SseType, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

StreamViewType

When writing a match expression against StreamViewType, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

TableClass

When writing a match expression against TableClass, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

TableStatus

When writing a match expression against TableStatus, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.

TimeToLiveStatus

When writing a match expression against TimeToLiveStatus, it is important to ensure your code is forward-compatible. That is, if a match arm handles a case for a feature that is supported by the service but has not been represented as an enum variant in a current version of SDK, your code should continue to work when you upgrade SDK to a future version in which the enum does include a variant for that feature.