Unfortunately, TurboTax cannot assist on that. If you have a CRA MyAccount you can try using CRA Autofill my return (AFR) to get the most updated and accurate information that the CRA has on file

You may need to talk to your employer to fix the T4 mistake if it is a mistake. This link has some information regarding to travel benefit, hope it helps: https://www.canada.ca/en/revenue-agency/services/tax/individuals/topics/about-your-tax-return/tax-re...

If turns out later it is a mistake after filed your tax, you can adjust it: https://turbotax.intuit.ca/tips/can-amend-tax-return-7452

Hope it helps