17.2.3.Combine CHOOSE and ERROR.TYPE to display friendly error message
Fill A1 with =1/0
Input the formula: =CHOOSE(ERROR.TYPE(A1),"Nothing here!","You can't divide by 0","A bad number has been entered", "The formula is referencing a bad cell or range","There is a problem with the entry","There is a problem with the entered value","Something is seriously wrong!")