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      • My worksheet is set to Manual mode. How to switch to Automatic?
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      • Why aren’t the employer’s/employee’s NIS contributions accurate on the NI184?
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  • Payroll
  • Error message when opening a worksheet “Error in Certificate. Please contact TTPay support.”
  • Getting Started
    • Understanding Tax Tables (PAYE, NIS, Health Surcharge)
    • Setting Up Deduction Types
    • Setting Up Earning Types
    • Setting Up Departments, Division, Positions and Skills
  • Time and Attendance
  • Payroll
  • Personnel Management
  • User & System Control
  • FAQs
    • Payroll
      • My worksheet is set to Manual mode. How to switch to Automatic?
      • How to change a worksheet date?
      • How to change a worksheet’s payroll period?
      • Error message when opening a worksheet “Error in Certificate. Please contact TTPay support.”
      • Earning is not showing up in the correct category in the TD4
      • Why aren’t the employer’s/employee’s NIS contributions accurate on the NI184?

Error message when opening a worksheet “Error in Certificate. Please contact TTPay support.”

Published on August 27, 2026

This usually occurs if the internet/ server was dropped when a worksheet was being posted. Please call 223-9600/628-7138/628-6225 if you are having this issue.

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Earning is not showing up in the correct category in the TD4
Why aren't the employer's/employee's NIS contributions accurate on the NI184?
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