VFD errors can be frustrating, especially when you're trying to serve customers. This guide covers the most common VFD errors you might encounter and how to fix them quickly.
Error 1: Certificate Connection Failed
This is one of the most common VFD errors. It usually means your software cannot establish a secure connection with TRA servers.
Causes:
- Expired VFD certificate
- Incorrect certificate password
- Certificate file corrupted during upload
- System date/time is incorrect
- Check if your certificate has expired (certificates are valid for 1-2 years)
- Verify you're using the correct password
- Re-upload the certificate file
- Ensure your computer's date and time are correct
- If expired, apply for a new certificate at TRA
Error 2: Receipt Transmission Pending
This means receipts have been created but not yet sent to TRA. This is often a temporary issue.
Causes:
- Internet connection is slow or unstable
- TRA server is temporarily unavailable
- Large backlog of receipts to transmit
- Check your internet connection
- Wait 5-10 minutes and check again
- In Tawala, go to Settings → VFD → Retry Pending Receipts
- If problem persists for more than 1 hour, contact support
Error 3: Invalid TIN/VRN
This error occurs when the TIN or VRN in your software doesn't match TRA records.
Causes:
- Typo when entering TIN or VRN
- Business registration not yet active
- VRN cancelled or suspended
- Double-check TIN and VRN against your TRA registration documents
- Verify your VAT registration is active at tra.go.tz
- Contact TRA if your registration status is unclear
Error 4: Z-Report Generation Failed
This prevents you from closing your business day properly.
Causes:
- Pending receipts that haven't transmitted
- Z-Report already generated for today
- Network connectivity issues
- First, ensure all pending receipts are transmitted
- Check if you already generated a Z-Report today
- Verify your internet connection
- Try again after 5 minutes
Error 5: Receipt Verification Failed
When a customer tries to verify a receipt on TRA's portal and it fails.
Causes:
- Receipt not yet transmitted to TRA
- QR code damaged or printed incorrectly
- TRA verification system temporarily down
- Check if the receipt was successfully transmitted in your system
- Try verifying using the receipt number instead of QR code
- Wait and try again later if TRA system is down
- Reprint the receipt if QR code is damaged
Error 6: VFD Locked
This is a serious error that prevents all VFD operations.
Causes:
- Multiple missed Z-Reports
- Suspected fraudulent activity
- Administrative suspension by TRA
- Visit your nearest TRA office immediately
- Bring your business license and TIN certificate
- Explain the situation and request unlocking
- Pay any applicable penalties
Preventive Measures
To avoid VFD errors:
- ✅ Maintain a stable internet connection
- ✅ Generate Z-Reports at the same time daily
- ✅ Keep your VFD certificate renewal dates tracked
- ✅ Use reliable VFD software like Tawala
- ✅ Train staff on proper VFD procedures
Need More Help?
If you're using Tawala and experiencing VFD issues, our support team is available 24/7 to help. Contact us through the Help Center or call our support line.
Get 24/7 VFD Support
Tawala customers get dedicated support for all VFD-related issues.
Get Started →