<p> <code>TransactGetItems</code> 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 <code>TransactGetItems</code> call can contain up to 100 <code>TransactGetItem</code> objects, each of which contains a <code>Get</code> structure that specifies an item to retrieve from a table in the account and Region. A call to <code>TransactGetItems</code> 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.</p> <p>DynamoDB rejects the entire <code>TransactGetItems</code> request if any of the following is true:</p> <ul> <li> <p>A conflicting operation is in the process of updating an item to be read.</p> </li> <li> <p>There is insufficient provisioned capacity for the transaction to be completed.</p> </li> <li> <p>There is a user error, such as an invalid data format.</p> </li> <li> <p>The aggregate size of the items in the transaction exceeded 4 MB.</p> </li> </ul>

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}