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Business / EFTPOS, Payments & eCommerce / EFTPOS & merchant support - CommBank / EFTPOS error codes

Common EFTPOS error codes

Code on your terminal
What it means
What to do
04
Declined
Ask customer for another form of payment
14
Invalid card number
Check card number or ask customer for another form of payment
33
Expired card
Ask customer for another form of payment
51
Insufficient funds
Ask customer for another form of payment
57
Transaction not allowed
Ask customer for another form of payment
55
Incorrect PIN
Ask customer to enter their PIN again
61
Daily limit exceeded
Ask customer for another form of payment
67
Phone our authorisation centre 
Call 1800 813 700
75
Incorrect PIN entered three times
Ask customer for another form of payment
91
Issuer unavailable
Ask customer to use a card from another bank
T907
Connection error
Check your WiFi connection or switch your terminal to use 4G
T911
Restricted WiFi network
Switch your terminal to use 4G or ask your IT specialist to remove restrictions

Have you tried restarting your terminal?

We know it sounds simple, but we’ve found restarting your EFTPOS terminal can fix the problem about 40% of the time.

Follow these instructions if you’re not sure how to restart your terminal.

Other helpful hints

    • If you’re having trouble connecting your terminal, check if we’ve reported any system outages or issues before contacting us
    • For some terminals, you may need to check your terminal can successfully log on. Follow the instructions in the user guide for your terminal 
    • Always check the card issue and expiry dates   
    • Always check the transaction amount matches the ‘Approved’ amount on the receipt before handing it to the customer 
    • Always refund to the same card that was used for the original purchase

Need more help?

  • View our EFTPOS Quick Reference Guide (PDF 63KB) or check the user guide for your terminal.

    You can also call our dedicated Merchant Helpdesk on 1800 230 177, available 24/7. To ensure we can help you as quickly as possible, have the following information ready:

    • Terminal ID (located at the top of your merchant receipt)
    • Trading name
    • Trading address
    • Trading phone number

     

We can help

Things you should know