# Troubleshooting

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This page was generated from content adapted from the [AWS Developer Guide](https://github.com/awsdocs/aws-step-functions-developer-guide.git)
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## General troubleshooting

* **Tip**\
  Use the [data flow simulator in the Step Functions console](https://console.aws.amazon.com/states/home?region=us-east-1#/simulator) to test JSON path syntax, to better understand how data is manipulated within a state, and to see how data is passed between states.

## Troubleshooting service integrations

* **Note**\
  You can try to use `.waitForTaskToken` with any API action. However, some APIs don't have any suitable parameters.