AWS SDK for .NET Documentation
TaskrunnerId Property
AmazonAmazon.DataPipeline.ModelReportTaskRunnerHeartbeatRequestTaskrunnerId Did this page help you?   Yes   No    Tell us about it...
The identifier of the task runner. This value should be unique across your AWS account. In the case of AWS Data Pipeline Task Runner launched on a resource managed by AWS Data Pipeline, the web service provides a unique identifier when it launches the application. If you have written a custom task runner, you should assign a unique identifier for the task runner.

Constraints:

Length
1 - 1024
Pattern
[\u0020-\uD7FF\uE000-\uFFFD\uD800\uDC00-\uDBFF\uDFFF\r\n\t]*

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

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