Moneris Checkout API: Error 51 Diagnostic Report - Solar... | terminalfaults.org

Technical Background:

Error 51 typically signals a communication failure between the terminal, the Moneris host, and the Interac network. This can originate from network congestion, DNS resolution failures, TLS handshake errors, or insufficient response timeouts. The Moneris Checkout API relies on stable TCP/IP connectivity and secure data transmission (HTTPS) to process Interac transactions. High transaction volumes can expose latent network bottlenecks or software inefficiencies.

Symptoms:

Error 51, indicating a 'Transaction Declined' message, observed during Moneris Checkout API transactions. This occurs intermittently, potentially during peak transaction times. Affects Interac transactions.

Possible Causes:

Interac network congestion causing timeout errors.
DNS resolution failure preventing the terminal from reaching the Moneris host.
TLS handshake failure due to outdated certificates or incompatible security protocols.
Insufficient response timeout configured on the terminal, prematurely terminating transactions.
Network latency issues, packet loss or bandwidth saturation.
Firmware bugs related to peak Interac transaction processing.

Solution:

1

Verify the terminal's network connection by pinging a reliable external server (e.g., 8.8.8.8).
2

Check the terminal's DNS settings to ensure they are correctly configured and resolving Moneris hostnames.
3

Inspect the terminal's system logs for TLS handshake errors or certificate validation failures.
4

Increase the terminal's transaction timeout value to accommodate potential network delays. (Consult Moneris documentation for allowed range).
5

Test the network bandwidth using a speed test application on a device connected to the same network as the terminal.
6

Consult Moneris support to inquire about known Interac network congestion issues and recommended firmware updates.
7

Perform a terminal software reboot (Safe Handling: unplug the device for 30 seconds, then reconnect).

Safety Warning:

Safe Handling: Always unplug the terminal from the power source before inspecting or adjusting cables. Avoid using excessive force when connecting or disconnecting cables. Ensure the area around the terminal is dry and free of obstructions. Static electricity can damage the terminal's components; ground yourself before touching the device, especially during dry winter months. Never attempt to open or modify the terminal casing due to potential electric shock and anti-tamper mechanisms.

Prevention:

Implement a network monitoring solution to track latency, packet loss, and bandwidth utilization. Schedule regular terminal software updates and security patches. Ensure proper cable management to prevent accidental disconnection or damage. Clean the touchscreen with an approved electronic device cleaner to maintain responsiveness. Consider implementing QoS (Quality of Service) on the network to prioritize transaction data.

Expert Tip:

Temporarily switch the terminal to a different network (e.g., a mobile hotspot) to isolate network-related issues. Collect transaction logs during error occurrence. Note the precise time of the error. This data is critical for effective troubleshooting with Moneris support.

Frequently Asked Questions

•Is the terminal's software up-to-date?

Check the Moneris documentation for the latest software version and update the terminal accordingly.

•What is the network latency between the terminal and the Moneris host?

Use network diagnostic tools to measure the round-trip time (RTT) between the terminal and the Moneris host. High latency can indicate a network bottleneck.

•Are there any other devices on the network experiencing connectivity issues?

If other devices are experiencing network problems, the issue may be with the network infrastructure rather than the terminal itself.

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•Is the terminal's software up-to-date?

•What is the network latency between the terminal and the Moneris host?

•Are there any other devices on the network experiencing connectivity issues?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: