<p>The name of the topic you want to create.</p> <p>Constraints: Topic names must be made up of only uppercase and lowercase ASCII letters, numbers, underscores, and hyphens, and must be between 1 and 256 characters long.</p> <p>For a FIFO (first-in-first-out) topic, the name must end with the <code>.fifo</code> suffix. </p>

<p>A map of attributes with their corresponding values.</p> <p>The following lists the names, descriptions, and values of the special request parameters that the <code>CreateTopic</code> action uses:</p> <ul> <li> <p> <code>DeliveryPolicy</code> – The policy that defines how Amazon SNS retries failed deliveries to HTTP/S endpoints.</p> </li> <li> <p> <code>DisplayName</code> – The display name to use for a topic with SMS subscriptions.</p> </li> <li> <p> <code>FifoTopic</code> – Set to true to create a FIFO topic.</p> </li> <li> <p> <code>Policy</code> – The policy that defines who can access your topic. By default, only the topic owner can publish or subscribe to the topic.</p> </li> <li> <p> <code>SignatureVersion</code> – The signature version corresponds to the hashing algorithm used while creating the signature of the notifications, subscription confirmations, or unsubscribe confirmation messages sent by Amazon SNS. By default, <code>SignatureVersion</code> is set to <code>1</code>.</p> </li> <li> <p> <code>TracingConfig</code> – Tracing mode of an Amazon SNS topic. By default <code>TracingConfig</code> is set to <code>PassThrough</code>, and the topic passes through the tracing header it receives from an Amazon SNS publisher to its subscriptions. If set to <code>Active</code>, Amazon SNS will vend X-Ray segment data to topic owner account if the sampled flag in the tracing header is true. This is only supported on standard topics.</p> </li> </ul> <p>The following attribute applies only to <a href="https://docs.aws.amazon.com/sns/latest/dg/sns-server-side-encryption.html">server-side encryption</a>:</p> <ul> <li> <p> <code>KmsMasterKeyId</code> – The ID of an Amazon Web Services managed customer master key (CMK) for Amazon SNS or a custom CMK. For more information, see <a href="https://docs.aws.amazon.com/sns/latest/dg/sns-server-side-encryption.html#sse-key-terms">Key Terms</a>. For more examples, see <a href="https://docs.aws.amazon.com/kms/latest/APIReference/API_DescribeKey.html#API_DescribeKey_RequestParameters">KeyId</a> in the <i>Key Management Service API Reference</i>. </p> </li> </ul> <p>The following attributes apply only to <a href="https://docs.aws.amazon.com/sns/latest/dg/sns-fifo-topics.html">FIFO topics</a>:</p> <ul> <li> <p> <code>FifoTopic</code> – When this is set to <code>true</code>, a FIFO topic is created.</p> </li> <li> <p> <code>ContentBasedDeduplication</code> – Enables content-based deduplication for FIFO topics.</p> <ul> <li> <p>By default, <code>ContentBasedDeduplication</code> is set to <code>false</code>. If you create a FIFO topic and this attribute is <code>false</code>, you must specify a value for the <code>MessageDeduplicationId</code> parameter for the <a href="https://docs.aws.amazon.com/sns/latest/api/API_Publish.html">Publish</a> action. </p> </li> <li> <p>When you set <code>ContentBasedDeduplication</code> to <code>true</code>, Amazon SNS uses a SHA-256 hash to generate the <code>MessageDeduplicationId</code> using the body of the message (but not the attributes of the message).</p> <p>(Optional) To override the generated value, you can specify a value for the <code>MessageDeduplicationId</code> parameter for the <code>Publish</code> action.</p> </li> </ul> </li> </ul>

<p>The list of tags to add to a new topic.</p> <note> <p>To be able to tag a topic on creation, you must have the <code>sns:CreateTopic</code> and <code>sns:TagResource</code> permissions.</p> </note>

<p>The body of the policy document you want to use for this topic.</p> <p>You can only add one policy per topic.</p> <p>The policy must be in JSON string format.</p> <p>Length Constraints: Maximum length of 30,720.</p>