A unique string that identifies the request and that allows failed CreateHostedZone requests to be retried without the risk of executing the operation twice. You must use a unique CallerReference string every time you create a hosted zone. CallerReference can be any unique string; you might choose to use a string that identifies your project, such as DNSMigration_01. Valid characters are any Unicode code points that are legal in an XML 1.0 document. The UTF-8 encoding of the value must be less than 128 bytes.

Constraints:

Length

1 - 128

public string CallerReference { get; set; }