# Data Types The Amazon Simple Queue Service API contains several data types that various actions use. This section describes each data type in detail. **Note** The order of each element in a data type structure is not guaranteed. Applications should not assume a particular order. The following data types are supported: + [BatchResultErrorEntry](API_BatchResultErrorEntry.md) + [ChangeMessageVisibilityBatchRequestEntry](API_ChangeMessageVisibilityBatchRequestEntry.md) + [ChangeMessageVisibilityBatchResultEntry](API_ChangeMessageVisibilityBatchResultEntry.md) + [DeleteMessageBatchRequestEntry](API_DeleteMessageBatchRequestEntry.md) + [DeleteMessageBatchResultEntry](API_DeleteMessageBatchResultEntry.md) + [ListMessageMoveTasksResultEntry](API_ListMessageMoveTasksResultEntry.md) + [Message](API_Message.md) + [MessageAttributeValue](API_MessageAttributeValue.md) + [MessageSystemAttributeValue](API_MessageSystemAttributeValue.md) + [SendMessageBatchRequestEntry](API_SendMessageBatchRequestEntry.md) + [SendMessageBatchResultEntry](API_SendMessageBatchResultEntry.md)