Here you go. IRS Understanding a CP05a notice
Understanding your CP05A notice | Internal Revenue Service
And Turbo Tax List of IRS notices
https://ttlc.intuit.com/turbotax-support/en-us/help-article/internal-revenue-service/got-letter-noti...
Turbo Tax CP05 notice
https://ttlc.intuit.com/turbotax-support/en-us/help-article/internal-revenue-service/got-cp05-notice...
