For one of my design, the Capacitors in the bottom right are causing a violation with the 200pin
connector whilst the fudicals are causing a
violation in close proximity the memory and
to the iMX6 chip. This was not causing a problem
before and it is now and I do not know why, or, how to correct it.
Is anyone able to advise?
In your case, what you only need to do is making exceptions for the fiducials in the rules.But are you sure you need those additional fiducials for the BGAs anyway? Most of the time, if the assembler is decent you will be fine just with 3 fiducials in the corners of the board.