Hi,
try this around your macros:

Sub macro xx()
Application.DisplayAlerts = False
(please your existing code here)
Application.DisplayAlerts=True
End sub


You can also place these commands just around the part of the code that creates these kind of messages (how to find them? => Press Alt-F11 to see your macro, place cursor at macro beginning, run the macro "step by step" by pressing F8 over and over again, until you see what code creates this message).

Kind regards
Bjorn