While switching across screens there is always a hazard of entering data into the production client by accident....
By submitting your personal information, you agree that TechTarget and its partners may contact you regarding relevant content, products and special offers.
To avoid this, change the appearence of the production screen so you don't get the two mixed up.
How to do it? Simple:
Log in > Customizing local layout (ALT+F12) > Set color to system (select color) > Save
Easy as that! Note that this only works with newer versions of SAP GUI, however.