Final answer:
The Lock Screen Message configuration profile payload is not available for computers; it is intended for iOS devices like iPhones and iPads to display messages on the lock screen.
Step-by-step explanation:
The configuration profile payload that is not available for computers is the Lock Screen Message. Configuration profiles are used on macOS and iOS devices to manage settings and deploy policies. Payloads like Passcode, Energy Saver, and Custom Settings are commonly applied to computers to control security settings, energy-saving preferences, and various custom policies. The Lock Screen Message payload, however, is intended for mobile devices such as iPhones and iPads to display a custom message on the lock screen, and is not applicable to computers.