I had some (brief) difficulty in removal of 2021 California lottery winnings from the taxpayer's 2021 CA return, until I found the following. Under the area in which the Form W-2G information is entered, is a section titled, "Other Information", which includes a line item that allows for identification of the winnings as "state lottery winnings". Identifying the winnings as state lottery winnings in this section will result in the inclusion of the winnings as an adjustment on the taxpayer's California Schedule CA.