AWS SDK for .NET Documentation
ChildPolicy Property
AmazonAmazon.SimpleWorkflow.ModelStartChildWorkflowExecutionDecisionAttributesChildPolicy Did this page help you?   Yes   No    Tell us about it...
If set, specifies the policy to use for the child workflow executions if the workflow execution being started is terminated by calling the TerminateWorkflowExecution action explicitly or due to an expired timeout. This policy overrides the default child policy specified when registering the workflow type using RegisterWorkflowType. The supported child policies are:
Note:
A child policy for the workflow execution being started must be specified either as a default registered for its workflow type or through this field. If neither this field is set nor a default child policy was specified at registration time then a fault will be returned.

Constraints:

Allowed Values
TERMINATE, REQUEST_CANCEL, ABANDON

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

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