Error code on Pax
✅ Issuer / Transaction Response Codes (00–99)
These standard codes come directly from the card issuer:
- 00 – Approved
- 01 – Refer to issuer
- 05 – Do Not Honor
- 12 – Invalid Transaction
- 13 – Amount Error
- 14 – Invalid Card Number
- 15 – No Such Issuer
- 16 – Insufficient Funds
- 19 – Re-enter Transaction
- 25 – No Card Number
- 28 – No Reply
- 39 – No Credit Account
- 41, 43 – Pick‑up/Withdraw Card (Lost/Stolen)
- 46 – Closed Account
- 51 – Insufficient Funds
- 54 – Expired Card
- 55 – Incorrect PIN
- 57 – Not Permitted to Cardholder
- 58 – Not Permitted at Terminal
- 59 – Suspected Fraud
- 61 – Exceeds Approval Limit
- 62 – Restricted
- 63 – Security Violation
- 91 – Issuer Unavailable
- 96 – System Malfunction
⚠️ Terminal / Host & Communication Errors (100xxx Family)
🖨️ Device-Level / UI Alerts
- SEND ERROR CODE – Terminal encountered internal request failure paymentcloudinc.com+5paymentcloudinc.com+5help.parkingbase.com+5
- TRANSACTION CANCELED – User or system aborted in-process transaction support.franpos.com+3paymentcloudinc.com+3help.newtekgateway.com+3
- HOST REJECT – Host declined the request (invalid parameters) paymentcloudinc.com+1support.franpos.com+1
- PARAMETER ERROR – Misconfiguration on terminal pax.us+6paymentcloudinc.com+6paymentcloudinc.com+6
- UNSUPPORTED TRANSACTION – Not supported by that terminal/app layer paymentcloudinc.com+6paymentcloudinc.com+6help.parkingbase.com+6
🌐 Network / Connectivity Alerts
- Check Lan Cable – Ethernet disconnected or faulty on A35/A920 taluspay.zendesk.com+9support.franpos.com+9paymentcloudinc.com+9
- RECV ACK ERROR – No acknowledgment from terminal during communication support.franpos.com+1paymentcloudinc.com+1
- TCPIP ERROR – Network failure (Ethernet or Wi‑Fi)
🛠️ Hardware / Security Alerts
- NPM (No Paper Mode) – Receipt paper missing or misaligned
- SO OPEN ERROR UAI – Firmware or provisioning failure, often solved via update support.franpos.com+1paymentcloudinc.com+1
- Ped Tamper / Attacked / Tamper Detected – Device tamper sensor triggered (RMA required) paymentcloudinc.com
🗂️ A35-Specific Messages
According to PAX A35 troubleshooting guides, you may encounter:
- PAX needs to be updated to v1.11
- Invalid card reader counter
- Fail to obtain approval for online transaction
- No default payment device (requires sync/restart)
- PED Tamper, so open error uai gravitypayments.com+12paymentcloudinc.com+12support.franpos.com+12
📌 Summary Overview
According to PAX A35 troubleshooting guides, you may encounter:
- 00–99 → Issuer response/decline codes
- 100xxx → Terminal-host/network communications and processing errors
- UI/device alerts → hardware, provisioning, receipt, or tamper-related issues
- A35-specific alerts → firmware required, card reader faults, sync issues
