Diagnostic report: Card terminal "Transaction Delayed" error. Identifies causes & solutions, emphasizing safety & external maintenance procedures.
Check the label on the power adapter.
Check the network cable or Wi-Fi settings.
Check the terminal's settings or contact the vendor.
EMV/NFC transaction processing relies on consistent power delivery and stable data communication. Voltage fluctuations, ESD, or signal attenuation can interrupt data exchange between the card terminal and the payment processor. Baud rate mismatches or corruption of cryptographic keys can also introduce delays.
Observed "Transaction Delayed" error during card processing. Extended transaction times noted before error message display.
Risk of electric shock. Always practice Safe Handling by disconnecting the terminal from the power outlet before inspecting cables or relocating the device. Do not use the terminal if it is visibly damaged or if the power cord is frayed. Anti-tamper mechanisms are present; do not attempt to open the device casing.
Implement cable strain relief measures to prevent damage to power and network cables.,Regularly clean the terminal's exterior with a dry, lint-free cloth.,Maintain a stable power supply and consider using a UPS (Uninterruptible Power Supply) to protect against power fluctuations.,Ensure the terminal is placed away from sources of EMI.,Keep the terminal's firmware up to date.,Implement an ESD control program, especially during dry winter months. Grounding straps can help prevent static discharge events.
Check the terminal's event logs for specific error codes or messages that may indicate the root cause of the transaction delays. Many terminals have a diagnostic mode accessible through a specific key combination (consult the user manual). A failing power adapter is a common cause; if available, test with a known good adapter of the same voltage and amperage.