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In this case, the tool creates test credentials to simplify the process. But when this is promoted to another tiers, the App Developers are required to obtain their own API Keys. 

4. When you continue scrolling down, you will be able to enter the parameters required to invoke the API. The tool allows you to generate test data. If you prefer, you can type or copy and paste some sample test data, you might have already available. See Figure 6-148. 

<img src='content_image/1006997.jpg'>

5. After you have entered all the information you can invoke the API, and you have the opportunity to repeat the invocation multiple times if needed. See Figure 6-149 on page 269. 

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6. After a moment the result of the API invocation is returned, where you can see the status code and the body of the response message. In this case we can see a successful invocation (200) as well as the response message we defined in the gatewayscript code. See Figure 6-150. 

