The question of Fix Compatibility

there has a question that I found , when the components have two or more same component,it not notice
wrong if the same components have different order in every layer,I wonder if I can understand my description.

Does this help:

I goto look at it now,thanks

How do I display all the lines? when I selected *Show Master Compatibility, It only shows one line which this component selected .others are not show

I got it, select all can do it