Request to add notification for duplicate Refrence and Code

It will be very useful to have some sort of notification when there are duplicates in the Reference number, item code, or code column in all the sections of the program. Even something like a red font for duplicates would be really good.

Is this not covered by one of these ideas?
Warning of item duplication, or Feature request: Detect / prevent duplicate reference numbers or A way to find transaction reference discrepancies

@Patch Specifically no but collectively yes, it is covered. either way, this post can be closed I made it because the posts I found on this topic were very old, and couldn’t find the ones you linked.