AWS SDK Version 3 for .NET
API Reference

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Updates an existing state machine by modifying its definition and/or roleArn. Running executions will continue to use the previous definition and roleArn.

All StartExecution calls within a few seconds will use the updated definition and roleArn. Executions started immediately after calling UpdateStateMachine may use the previous state machine definition and roleArn. You must include at least one of definition or roleArn or you will receive a MissingRequiredParameter error.


For .NET Core and PCL this operation is only available in asynchronous form. Please refer to UpdateStateMachineAsync.

Namespace: Amazon.StepFunctions
Assembly: AWSSDK.StepFunctions.dll
Version: 3.x.y.z


public virtual UpdateStateMachineResponse UpdateStateMachine(
         UpdateStateMachineRequest request
Type: Amazon.StepFunctions.Model.UpdateStateMachineRequest

Container for the necessary parameters to execute the UpdateStateMachine service method.

Return Value
The response from the UpdateStateMachine service method, as returned by StepFunctions.


InvalidArnException The provided Amazon Resource Name (ARN) is invalid.
InvalidDefinitionException The provided Amazon States Language definition is invalid.
MissingRequiredParameterException Request is missing a required parameter. This error occurs if both definition and roleArn are not specified.
StateMachineDeletingException The specified state machine is being deleted.
StateMachineDoesNotExistException The specified state machine does not exist.

Version Information

.NET Framework:
Supported in: 4.5, 4.0, 3.5

Portable Class Library:
Supported in: Windows Store Apps
Supported in: Windows Phone 8.1
Supported in: Xamarin Android
Supported in: Xamarin iOS (Unified)
Supported in: Xamarin.Forms

See Also