Apple allows beta testing with TestFlight to enable developers to send an app to the store for testing without putting it out for general release to the public until it has been thoroughly tested. This article informs you that this is not a supported option with our platform.
You want to make use of the Apple TestFlight option so you can distribute your app to a specific audience so they can test it out and provide you with feedback. You can invite testers using their email addresses or by sharing a public link to them.
Please note that the BiznessApps platform is not designed to support this type of submissions and you cannot make use of the Apple TestFlight option.