<p>The DB cluster identifier of the DB cluster to be described. This parameter is stored as a lowercase string.</p> <p>Constraints:</p> <ul> <li> <p>Must contain from 1 to 63 alphanumeric characters or hyphens.</p> </li> <li> <p>First character must be a letter.</p> </li> <li> <p>Can't end with a hyphen or contain two consecutive hyphens.</p> </li> </ul> <p>Example: <code>my-cluster1</code> </p>

<p>If specified, this value is the backtrack identifier of the backtrack to be described.</p> <p>Constraints:</p> <ul> <li> <p>Must contain a valid universally unique identifier (UUID). For more information about UUIDs, see <a href="http://www.ietf.org/rfc/rfc4122.txt">A Universally Unique Identifier (UUID) URN Namespace</a>.</p> </li> </ul> <p>Example: <code>123e4567-e89b-12d3-a456-426655440000</code> </p>

<p>A filter that specifies one or more DB clusters to describe. Supported filters include the following:</p> <ul> <li> <p> <code>db-cluster-backtrack-id</code> - Accepts backtrack identifiers. The results list includes information about only the backtracks identified by these identifiers.</p> </li> <li> <p> <code>db-cluster-backtrack-status</code> - Accepts any of the following backtrack status values:</p> <ul> <li> <p> <code>applying</code> </p> </li> <li> <p> <code>completed</code> </p> </li> <li> <p> <code>failed</code> </p> </li> <li> <p> <code>pending</code> </p> </li> </ul> <p>The results list includes information about only the backtracks identified by these values.</p> </li> </ul>

<p>The maximum number of records to include in the response. If more records exist than the specified <code>MaxRecords</code> value, a pagination token called a marker is included in the response so you can retrieve the remaining results.</p> <p>Default: 100</p> <p>Constraints: Minimum 20, maximum 100.</p>

An optional pagination token provided by a previous <code>DescribeDBClusterBacktracks</code> request. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by <code>MaxRecords</code>.