Key shortcut items in red

Hi there
Why are some entries in the keyboard shortcuts setup in red?
Have looked in Opus help and searched forums...

Thanks..

It means that they clash with other entries (I.e. duplicates).

Thank you Jon
By unticking the Ctrl + Y entry then testing the keystroke I found that Ctrl + y toggles the Utility panel in Synchronize mode.
I cannot find such an entry in the screenshot above or anywhere on the panel itself to set or reset this keystroke.
Do you have any idea where I might look to find it? I am looking for a place to view/edit/change the existing keystroke which currently toggles the Utility panel in Synch mode

It would be in that list. Type Y into the filter field at the bottom to see keys using that letter.