You can try out different types of valid or invalid requests to the API. These requests will not impact the real MFR database, so you can test whatever usage scenarios you wish.

Note: for methods that require a file input, simply specify the name of the file using the name of the variable to which you have assigned the value of the file from where the user would be uploading it in your application. This test API has an optional header parameter called validFile which you can set to true or false just to see what the real API would return if an invalid or corrupted file was uploaded.