Request Syntax Request Parameters Response Syntax Response Elements Errors Examples See Also

SendMessageBatch

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).

Important

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.

Request Syntax


{
   "Entries": [ 
      { 
         "DelaySeconds": number,
         "Id": "string",
         "MessageAttributes": { 
            "string" : { 
               "BinaryListValues": [ blob ],
               "BinaryValue": blob,
               "DataType": "string",
               "StringListValues": [ "string" ],
               "StringValue": "string"
            }
         },
         "MessageBody": "string",
         "MessageDeduplicationId": "string",
         "MessageGroupId": "string",
         "MessageSystemAttributes": { 
            "string" : { 
               "BinaryListValues": [ blob ],
               "BinaryValue": blob,
               "DataType": "string",
               "StringListValues": [ "string" ],
               "StringValue": "string"
            }
         }
      }
   ],
   "QueueUrl": "string"
}

Request Parameters

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

The request accepts the following data in JSON format.

Entries

A list of SendMessageBatchRequestEntry items.

Type: Array of SendMessageBatchRequestEntry objects

Required: Yes

QueueUrl

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

Queue URLs and names are case-sensitive.

Type: String

Required: Yes

Response Syntax


{
   "Failed": [ 
      { 
         "Code": "string",
         "Id": "string",
         "Message": "string",
         "SenderFault": boolean
      }
   ],
   "Successful": [ 
      { 
         "Id": "string",
         "MD5OfMessageAttributes": "string",
         "MD5OfMessageBody": "string",
         "MD5OfMessageSystemAttributes": "string",
         "MessageId": "string",
         "SequenceNumber": "string"
      }
   ]
}

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.

Failed

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

Type: Array of BatchResultErrorEntry objects

Successful

A list of SendMessageBatchResultEntry items.

Type: Array of SendMessageBatchResultEntry objects

Errors

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

BatchEntryIdsNotDistinct

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

HTTP Status Code: 400

BatchRequestTooLong

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

HTTP Status Code: 400

EmptyBatchRequest

The batch request doesn't contain any entries.

HTTP Status Code: 400

InvalidBatchEntryId

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

HTTP Status Code: 400

InvalidSecurity

When the request to a queue is not HTTPS and SigV4.

HTTP Status Code: 400

KmsAccessDenied

The caller doesn't have the required KMS access.

HTTP Status Code: 400

KmsDisabled

The request was denied due to request throttling.

HTTP Status Code: 400

KmsInvalidKeyUsage

The request was rejected for one of the following reasons:

The KeyUsage value of the KMS key is incompatible with the API operation.
The encryption algorithm or signing algorithm specified for the operation is incompatible with the type of key material in the KMS key (KeySpec).

HTTP Status Code: 400

KmsInvalidState

The request was rejected because the state of the specified resource is not valid for this request.

HTTP Status Code: 400

KmsNotFound

The request was rejected because the specified entity or resource could not be found.

HTTP Status Code: 400

KmsOptInRequired

The request was rejected because the specified key policy isn't syntactically or semantically correct.

HTTP Status Code: 400

KmsThrottled

AWS KMS throttles requests for the following conditions.

HTTP Status Code: 400

QueueDoesNotExist

The specified queue doesn't exist.

HTTP Status Code: 400

RequestThrottled

The request was denied due to request throttling.

The rate of requests per second exceeds the AWS KMS request quota for an account and Region.
A burst or sustained high rate of requests to change the state of the same KMS key. This condition is often known as a "hot key."
Requests for operations on KMS keys in a AWS CloudHSM key store might be throttled at a lower-than-expected rate when the AWS CloudHSM cluster associated with the AWS CloudHSM key store is processing numerous commands, including those unrelated to the AWS CloudHSM key store.

HTTP Status Code: 400

TooManyEntriesInBatchRequest

The batch request contains more entries than permissible.

HTTP Status Code: 400

UnsupportedOperation

Error code 400. Unsupported operation.

HTTP Status Code: 400

Examples

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 AWS General Reference.

Example

Using AWS query protocol

Sample Request


POST /177715257436/MyQueue/ HTTP/1.1
Host: sqs.us-east-1.amazonaws.com
X-Amz-Date: <Date>
Content-Type: application/x-www-form-urlencoded
Authorization: <AuthParams>
Content-Length: <PayloadSizeBytes>
Connection: Keep-Alive
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

Sample Response


HTTP/1.1 200 OK
<?xml version="1.0"?>
<SendMessageBatchResponse xmlns="http://queue.amazonaws.com/doc/2012-11-05/">
    <SendMessageBatchResult>
        <SendMessageBatchResultEntry>
            <Id>test_msg_001</Id>
            <MessageId>60e827c3-c8a5-410a-af0e-fb43746e70b1</MessageId>
            <MD5OfMessageBody>0e024d309850c78cba5eabbeff7cae71</MD5OfMessageBody>
        </SendMessageBatchResultEntry>
        <SendMessageBatchResultEntry>
            <Id>test_msg_00</Id>
            <MessageId>c6e7fc6a-b802-4724-be06-59833004578b</MessageId>
            <MD5OfMessageBody>7fb8146a82f95e0af155278f406862c2</MD5OfMessageBody>
            <MD5OfMessageAttributes>ba056227cfd9533dba1f72ad9816d233</MD5OfMessageAttributes>
        </SendMessageBatchResultEntry>
    </SendMessageBatchResult>
    <ResponseMetadata>
        <RequestId>5150a701-14f7-5609-b136-fb71a0ca744a</RequestId>
    </ResponseMetadata>
</SendMessageBatchResponse>

Example

Using AWS query protocol

Sample Request


POST /177715257436/MyQueue/ HTTP/1.1
Host: sqs.us-east-1.amazonaws.com
X-Amz-Date: <Date>
Content-Type: application/x-www-form-urlencoded
Authorization: <AuthParams>
Content-Length: <PayloadSizeBytes>
Connection: Keep-Alive
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