2012 SR5 under the hood decal/sticker missing?

Today while washing my 2012 Tacoma SR5 4 x 4 I opened the hood to dry around the edges and noticed I was missing a decal sticker. I'd noticed sometime ago it was peeling off and was to reapply some adhesive to it. Location is left side of engine compartment on top of cover that sits on radiator (see picture). Does anyone know what that sticker was or said? Or could you send me a pick of yours. It was yellow with black lettering approximately 4" long by 1" wide. And where could I purchase a new one? Thanks for the help!!!!

 

Something about refrigerant under high pressure with specs for the refrigerant. If you aren't inclined to work on your AC, I wouldn't worry about it. Professionals would be aware of it.