AWS SDK for .NET Documentation
Version Property
AmazonAmazon.SimpleWorkflow.ModelRegisterWorkflowTypeRequestVersion Did this page help you?   Yes   No    Tell us about it...
The version of the workflow type.
Note:
The workflow type consists of the name and version, the combination of which must be unique within the domain. To get a list of all currently registered workflow types, use the ListWorkflowTypes action.
The specified string must not start or end with whitespace. It must not contain a : (colon), / (slash), | (vertical bar), or any control characters (\u0000-\u001f | \u007f - \u009f). Also, it must not contain the literal string "arn".

Constraints:

Length
1 - 64

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

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