Debugging NDC requires looking at the and Communication Logs .
Badly formatted fields, missing LUN, or incorrect PIN block formatting.
Every user input state must have a fallback timeout state to prevent abandoned cards or exposed PIN screens.
Do you need help troubleshooting a specific ? Share public link aptra advance ndc developer-s guide
A single character representing the functional rule. Screen Number: The visual interface mapped to the state.
If a hardware error occurs (e.g., a dispenser fails to rack out bills), check the XFS layer logs. These logs capture the explicit communication commands sent between the NDC application and the low-level device drivers. Common Developer Errors and Fixes Probable Cause Resolution ATM stuck in a loop between two states
// Example using a library like ut-codec-ndc const decodedMessage = ndc.decode(buffer, $meta, context, log); // decodedMessage.tokens now contains the parsed NDC fields Debugging NDC requires looking at the and Communication Logs
To change a user journey (e.g., adding a new language selection step), developers modify the state tables on the host system.
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Create a module that implements the standard APTRA state interface. Your code will receive control when the state engine transitions to your custom identifier. Do you need help troubleshooting a specific
Use the NetTrace utility to see raw hex data moving between the ATM and the Host.
Custom C++ or .NET DLLs that "exit" the standard NDC flow to perform complex local logic (like barcode validation) before returning to the host.