Thanks guys I agree with both of you.
Just strange the way they put things as technically if you switched off the antiskid & nws switch when landing with a B+Y failure if 1 in a million chance the green brakes bugged out while you were using them, if you had accumulator pressure it should work and therefore the alternate brakes are not exactly a completely inop system.
As in the case of the G + Y... ALTN BRK is not listed as inop and we are on accumulator only hehe.
Of course we would know what systems we have from reviewing the system pages as well, it is just interesting the way they put things on the ecam screens when they don't make any sense at all.
thanks guys!