The JSON panel shows the returned JSON response.
You can edit the response to assert potential responses from the service. Right-click in the editor and select Edit.
To check if the response data matches the web service specification, right-click the JSON panel and select Validate from the context menu. The editor will check the response data and report about errors, if any:
This command works with the REST services based on Swagger 2.0 specifications in the JSON and YAML formats. Also, these Swagger 2.0 services must be added to the project in ReadyAPI 2.2 or later.
For other services, the command checks if JSON data is valid.