SendMessageBatch - Amazon Simple Queue Service
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You can use SendMessageBatch to send up to 10 messages to the specified queue by assigning either identical or different values to each message (or by not assigning values at all). This is a batch version of SendMessage. For a FIFO queue, multiple messages within a single batch are enqueued in the order they are sent.

The result of sending each message is reported individually in the response. Because the batch request can result in a combination of successful and unsuccessful actions, you should check for batch errors even when the call returns an HTTP status code of 200.

The maximum allowed individual message size and the maximum total payload size (the sum of the individual lengths of all of the batched messages) are both 256 KiB (262,144 bytes).


A message can include only XML, JSON, and unformatted text. The following Unicode characters are allowed:

#x9 | #xA | #xD | #x20 to #xD7FF | #xE000 to #xFFFD | #x10000 to #x10FFFF

Any characters not included in this list will be rejected. For more information, see the W3C specification for characters.

If you don't specify the DelaySeconds parameter for an entry, Amazon SQS uses the default value for the queue.

Some actions take lists of parameters. These lists are specified using the param.n notation. Values of n are integers starting from 1. For example, a parameter list with two elements looks like this:



Request Parameters

For information about the parameters that are common to all actions, see Common Parameters.


The URL of the Amazon SQS queue to which batched messages are sent.

Queue URLs and names are case-sensitive.

Type: String

Required: Yes


A list of SendMessageBatchRequestEntry items.

Type: Array of SendMessageBatchRequestEntry objects

Required: Yes

Response Elements

The following elements are returned by the service.


A list of BatchResultErrorEntry items with error details about each message that can't be enqueued.

Type: Array of BatchResultErrorEntry objects


A list of SendMessageBatchResultEntry items.

Type: Array of SendMessageBatchResultEntry objects


For information about the errors that are common to all actions, see Common Errors.


Two or more batch entries in the request have the same Id.

HTTP Status Code: 400


The length of all the messages put together is more than the limit.

HTTP Status Code: 400


The batch request doesn't contain any entries.

HTTP Status Code: 400


The Id of a batch entry in a batch request doesn't abide by the specification.

HTTP Status Code: 400


The batch request contains more entries than permissible.

HTTP Status Code: 400


Error code 400. Unsupported operation.

HTTP Status Code: 400



The following example SendMessageBatch request sends two messages to the queue. You must URL-encode the entire URL. However, in this example only the message body is URL-encoded to make the example easier to read. The structure of AUTHPARAMS depends on the signature of the API request. For more information, see Examples of Signed Signature Version 4 Requests in the Amazon General Reference.

Sample Request ?Action=SendMessageBatch &SendMessageBatchRequestEntry.1.Id=test_msg_001 &SendMessageBatchRequestEntry.1.MessageBody=test%20message%20body%201 &SendMessageBatchRequestEntry.2.Id=test_msg_002 &SendMessageBatchRequestEntry.2.MessageBody=test%20message%20body%202 &SendMessageBatchRequestEntry.2.DelaySeconds=60 &SendMessageBatchRequestEntry.2.MessageAttribute.1.Name=test_attribute_name_1 &SendMessageBatchRequestEntry.2.MessageAttribute.1.Value.StringValue=test_attribute_value_1 &SendMessageBatchRequestEntry.2.MessageAttribute.1.Value.DataType=String &Expires=2020-05-05T22%3A52%3A43PST &Version=2012-11-05 &AUTHPARAMS

Sample Response

<SendMessageBatchResponse> <SendMessageBatchResult> <SendMessageBatchResultEntry> <Id>test_msg_001</Id> <MessageId>0a5231c7-8bff-4955-be2e-8dc7c50a25fa</MessageId> <MD5OfMessageBody>0e024d309850c78cba5eabbeff7cae71</MD5OfMessageBody> </SendMessageBatchResultEntry> <SendMessageBatchResultEntry> <Id>test_msg_002</Id> <MessageId>15ee1ed3-87e7-40c1-bdaa-2e49968ea7e9</MessageId> <MD5OfMessageBody>7fb8146a82f95e0af155278f406862c2</MD5OfMessageBody> <MD5OfMessageAttributes>295c5fa15a51aae6884d1d7c1d99ca50</MD5OfMessageAttributes> </SendMessageBatchResultEntry> </SendMessageBatchResult> <ResponseMetadata> <RequestId>ca1ad5d0-8271-408b-8d0f-1351bf547e74</RequestId> </ResponseMetadata> </SendMessageBatchResponse>


The following example sends multiple messages with message timers—applying a visibility delay of variable length to the messages in the batch—by calling the SendMessageBatch action without a value for DelaySeconds for the first message and with the values of 45 seconds and 2 minutes for the second and third messages.


If you don't set a value for the DelaySeconds parameter, the message might still be subject to a delay if you add the message to a delay queue. For more information about using delay queues, see Amazon SQS Delay Queues in the Amazon SQS Developer Guide.

Sample Request ?Action=SendMessageBatch &SendMessageBatchRequestEntry.1.Id=test_msg_no_message_timer &SendMessageBatchRequestEntry.1.MessageBody=test%20message%20body%201 &SendMessageBatchRequestEntry.2.Id=test_msg_delay_45_seconds &SendMessageBatchRequestEntry.2.MessageBody=test%20message%20body%202 &SendMessageBatchRequestEntry.2.DelaySeconds=45 &SendMessageBatchRequestEntry.3.Id=test_msg_delay_2_minutes &SendMessageBatchRequestEntry.3.MessageBody=test%20message%20body%203 &SendMessageBatchRequestEntry.3.DelaySeconds=120 &Expires=2020-12-18T22%3A52%3A43PST &Version=2012-11-05 &AUTHPARAMS

See Also

For more information about using this API in one of the language-specific Amazon SDKs, see the following: