Welcome to the QuickBooks Community, 8lw8ysL38rn1ng.
I appreciate you reaching out for assistance regarding the unexpected additional CA and SDI deductions on your employees' payroll.
The additional deduction may have resulted from an accidental creation of a new check dated in May. To address this, I recommend checking the number of checks issued to your employees in May 2023 and identifying any accidental additions. If an erroneous check is found, you can void it. It's important to be cautious when making changes, so I advise backing up your company file before deleting any transactions to ensure the integrity of your data.
Feel free to go back to this thread if you have other questions in mind. Have a good one!