AWS SDK for .NET Documentation
ClientToken Property
AmazonAmazon.StorageGateway.ModelCreateTapesRequestClientToken Did this page help you?   Yes   No    Tell us about it...
A unique identifier that you use to retry a request. If you retry a request, use the same ClientToken you specified in the initial request.
Note:
Using the same ClientToken prevents creating the tape multiple times.

Constraints:

Length
5 - 100

Declaration Syntax
C#
public string ClientToken { get; set; }

Assembly: AWSSDK (Module: AWSSDK) Version: 1.5.60.0 (1.5.60.0)