| Class | Description | 
|---|---|
| ActivityFailedEventDetails | 
 Contains details about an activity which failed during an execution. | 
| ActivityListItem | 
 Contains details about an activity. | 
| ActivityScheduledEventDetails | 
 Contains details about an activity scheduled during an execution. | 
| ActivityScheduleFailedEventDetails | 
 Contains details about an activity schedule failure which occurred during an execution. | 
| ActivityStartedEventDetails | 
 Contains details about the start of an activity during an execution. | 
| ActivitySucceededEventDetails | 
 Contains details about an activity which successfully terminated during an execution. | 
| ActivityTimedOutEventDetails | 
 Contains details about an activity timeout which occurred during an execution. | 
| CreateActivityRequest | |
| CreateActivityResult | |
| CreateStateMachineRequest | |
| CreateStateMachineResult | |
| DeleteActivityRequest | |
| DeleteActivityResult | |
| DeleteStateMachineRequest | |
| DeleteStateMachineResult | |
| DescribeActivityRequest | |
| DescribeActivityResult | |
| DescribeExecutionRequest | |
| DescribeExecutionResult | |
| DescribeStateMachineForExecutionRequest | |
| DescribeStateMachineForExecutionResult | |
| DescribeStateMachineRequest | |
| DescribeStateMachineResult | |
| ExecutionAbortedEventDetails | 
 Contains details about an abort of an execution. | 
| ExecutionFailedEventDetails | 
 Contains details about an execution failure event. | 
| ExecutionListItem | 
 Contains details about an execution. | 
| ExecutionStartedEventDetails | 
 Contains details about the start of the execution. | 
| ExecutionSucceededEventDetails | 
 Contains details about the successful termination of the execution. | 
| ExecutionTimedOutEventDetails | 
 Contains details about the execution timeout which occurred during the execution. | 
| GetActivityTaskRequest | |
| GetActivityTaskResult | |
| GetExecutionHistoryRequest | |
| GetExecutionHistoryResult | |
| HistoryEvent | 
 Contains details about the events of an execution. | 
| LambdaFunctionFailedEventDetails | 
 Contains details about a lambda function which failed during an execution. | 
| LambdaFunctionScheduledEventDetails | 
 Contains details about a lambda function scheduled during an execution. | 
| LambdaFunctionScheduleFailedEventDetails | 
 Contains details about a failed lambda function schedule event which occurred during an execution. | 
| LambdaFunctionStartFailedEventDetails | 
 Contains details about a lambda function which failed to start during an execution. | 
| LambdaFunctionSucceededEventDetails | 
 Contains details about a lambda function which successfully terminated during an execution. | 
| LambdaFunctionTimedOutEventDetails | 
 Contains details about a lambda function timeout which occurred during an execution. | 
| ListActivitiesRequest | |
| ListActivitiesResult | |
| ListExecutionsRequest | |
| ListExecutionsResult | |
| ListStateMachinesRequest | |
| ListStateMachinesResult | |
| SendTaskFailureRequest | |
| SendTaskFailureResult | |
| SendTaskHeartbeatRequest | |
| SendTaskHeartbeatResult | |
| SendTaskSuccessRequest | |
| SendTaskSuccessResult | |
| StartExecutionRequest | |
| StartExecutionResult | |
| StateEnteredEventDetails | 
 Contains details about a state entered during an execution. | 
| StateExitedEventDetails | 
 Contains details about an exit from a state during an execution. | 
| StateMachineListItem | 
 Contains details about the state machine. | 
| StopExecutionRequest | |
| StopExecutionResult | |
| UpdateStateMachineRequest | |
| UpdateStateMachineResult | 
| Enum | Description | 
|---|---|
| ExecutionStatus | |
| HistoryEventType | |
| StateMachineStatus | 
| Exception | Description | 
|---|---|
| ActivityDoesNotExistException | 
 The specified activity does not exist. | 
| ActivityLimitExceededException | 
 The maximum number of activities has been reached. | 
| ActivityWorkerLimitExceededException | 
 The maximum number of workers concurrently polling for activity tasks has been reached. | 
| AWSStepFunctionsException | Base exception for all service exceptions thrown by AWS Step Functions | 
| ExecutionAlreadyExistsException | 
 The execution has the same  nameas another execution (but a differentinput). | 
| ExecutionDoesNotExistException | 
 The specified execution does not exist. | 
| ExecutionLimitExceededException | 
 The maximum number of running executions has been reached. | 
| InvalidArnException | 
 The provided Amazon Resource Name (ARN) is invalid. | 
| InvalidDefinitionException | 
 The provided Amazon States Language definition is invalid. | 
| InvalidExecutionInputException | 
 The provided JSON input data is invalid. | 
| InvalidNameException | 
 The provided name is invalid. | 
| InvalidOutputException | 
 The provided JSON output data is invalid. | 
| InvalidTokenException | 
 The provided token is invalid. | 
| MissingRequiredParameterException | 
 Request is missing a required parameter. | 
| StateMachineAlreadyExistsException | 
 A state machine with the same name but a different definition or role ARN already exists. | 
| StateMachineDeletingException | 
 The specified state machine is being deleted. | 
| StateMachineDoesNotExistException | 
 The specified state machine does not exist. | 
| StateMachineLimitExceededException | 
 The maximum number of state machines has been reached. | 
| TaskDoesNotExistException | |
| TaskTimedOutException | 
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