Getting warning message when open Payroll Vendor Processing

I am getting the following prompt when open Vendor Processing.  Employee master has been updated. NO changes allowed. Continue? What does this mean?

• Enterprise ERP
• Payroll Processing
• Payroll Vendor Processing

Employee Update step has been complete for the payroll

This warning means the Employee Update step has been processed for the payroll, and no changes may be entered.  Can select Yes to the prompt to proceed in inquiry mode.

• If need to make changes, the payroll would need to be reversed How to Reverse Employee Update to make changes to Pay or Deductions
• If working in the incorrect payroll warrant, open Payroll Start and Status > Search for the correct warrant > click Change.