Hello, Cheryl.
I know how you can fix and correct an address error message for your employee in QuickBooks Online Payroll (QBOP). I'll go over some details to help you get around it.
When QuickBooks doesn't accept the city, county, or zip code while you enter an employee's address, you need to verify it first and look it up with the USPS website.
Make sure your employee has provided you with an accurate residential address. If they live in an unincorporated or rural area, they’ll need to speak with their local post office. After that, you need to verify if the address is acceptable and that their city is within a specific zip code by searching the United States USPS (USPS) database.
For the complete guide, please see this article: Fix error City, State, or Zip code not matching or not found.
Once verified, enter your employee's address. For the complete guide, you can refer to this article: Add your new employee to QuickBooks Payroll.
Additionally, whenever you're ready to create employees' paychecks and run payroll in QBOP, you may want to check out this article to guide you further: Create and run your payroll.
I'm always ready to back you up if you need more help with payroll and entering employee information in QBOP. I'll keep the thread open so you can comment back. Take care, Cheryl.