“Printing In Ink-Backup Mode” is an alert that appears when you are trying to print something.
What is causing it? Answer: The fact that one of your cartridge is missing from the printer, either the black or the color one.
How to get rid of these alerts? Answer: You can insert even an empty cartridge into your printer. It doesn’t matter if it’s full or empty. If your printer isn’t missing any cartridge, you won’t get the alerts anymore.