Line 229, Other Employment expenses, takes entries from the Employment Expenses section of your return and transfers the amounts to Form T777 resulting in the total amount on line 229.
To review your entries for Employment Expenses, use the Find button to search/select the term Employment Expenses.
Since you are a TurboTax Live Assist & Review user, you can also contact a tax expert for assistance. Here's how: https://turbotax.community.intuit.ca/community/navigating-turbotax/help/i-m-using-turbotax-live-assist-review-how-do-i-talk-to-a-tax-expert/00/873764