TransactGetItems (smaws-clients.Smaws_Client

val request : 
  Smaws_Lib.Context.t ->
  transact_get_items_input ->
  (transact_get_items_output,
    [> Smaws_Lib.Protocols.AwsJson.error
    | `InternalServerError of internal_server_error
    | `InvalidEndpointException of invalid_endpoint_exception
    | `ProvisionedThroughputExceededException of
      provisioned_throughput_exceeded_exception
    | `RequestLimitExceeded of request_limit_exceeded
    | `ResourceNotFoundException of resource_not_found_exception
    | `TransactionCanceledException of transaction_canceled_exception ])
    Stdlib.result

TransactGetItems is a synchronous operation that atomically retrieves multiple items from one or more tables (but not from indexes) in a single account and Region. A TransactGetItems call can contain up to 100 TransactGetItem objects, each of which contains a Get structure that specifies an item to retrieve from a table in the account and Region. A call to TransactGetItems cannot retrieve items from tables in more than one Amazon Web Services account or Region. The aggregate size of the items in the transaction cannot exceed 4 MB.

DynamoDB rejects the entire TransactGetItems request if any of the following is true:

A conflicting operation is in the process of updating an item to be read.
There is insufficient provisioned capacity for the transaction to be completed.
There is a user error, such as an invalid data format.
The aggregate size of the items in the transaction exceeded 4 MB.