Thank you all for your feedback and suggestions.
I think iMiAMi2014 is right, I am not concerned about the map, I am concerned in game. I have a warehouse where I have a middle wall and from both sides a have shelves with chests. If I stay in front of one chest, I can see all the icons from the other chest behind the wall as well. This is so annoying because it is harder than to find the right chest. I know I can use text label but why having icons then. I still could not replicate what said above, I can not turn off the chest icons on the map, i can not even see the chest icns on the map.
Thanks