"""Unique identifier for the query to be answered"""
ok:bool
"""Specify :code:`True` if everything is alright (goods are available, etc.) and the bot is ready to proceed with the order. Use :code:`False` if there are any problems."""
error_message:Optional[str]=None
"""Required if *ok* is :code:`False`. Error message in human readable form that explains the reason for failure to proceed with the checkout (e.g. "Sorry, somebody just bought the last of our amazing black T-shirts while you were busy filling out your payment details. Please choose a different color or garment!"). Telegram will display this message to the user."""