Missing Comma with Nonrestrictive Element
Just as you should not put commas around essential or restrictive information in a sentence, you must remember to put commas around information that is non-essential or nonrestrictive.
If the information is not essential to the meaning of the sentence, you need to be sure to set it off with commas. Here is an example of a sentence without proper commas around the nonrestrictive element:
Here is the corrected version: