OEN provides a framework to run modern web-based user interfaces (HTML5, CSS3, JavaScript) on top of the traditional Advance NDC runtime engine. The application layer communicates with the underlying state machine via JSON-RPC or dedicated local WebSockets, decoupling visual asset design from strict host screen definitions. 5. Testing, Debugging, and Troubleshooting
Audit trails tracking user interactions, screen progressions, and communications packets chronologically. Common Development Errors Error Indicator / Symptom Root Cause Resolution Strategy Infinite Loop (Screen Flashing) Invalid Next-State ID configuration.
Tracks the exact state transitions and message exchanges chronologically. If an ATM mysteriously reboots or enters a "Going Out of Service" loop, checking the exact State ID in the journal file right before the crash will isolate the faulty logic block. Simulation Tools aptra advance ndc developer-s guide
Specifies subsequent physical actions, such as capturing the card, ejecting the card, or printing a receipt. Customization and Extension: Custom States
Which specific (e.g., standard NDC, NDC+, or a specific switch customized version) does your project use? OEN provides a framework to run modern web-based
The visual or textual layouts presented to the consumer.
The host processes the request and returns a Transaction Reply. This message contains the critical , which explicitly dictate to APTRA how many notes to dispense, what receipt to print, and which next state to execution. 3. Configuration and State Flow Programming If an ATM mysteriously reboots or enters a
Developing or debugging within the Advance NDC ecosystem requires an intimate understanding of the four primary data blocks downloaded by the host: States (State Tables)
Unlike traditional event-driven desktop or mobile applications, Advance NDC operates primarily as a . The runtime flow of the ATM—what it displays, how it reacts to card inserts, and when it dispenses cash—is dictated by a sequence of highly structured states downloaded directly from the central host. The Role of CEN/XFS
Securing transaction requests to ensure message integrity and prevent man-in-the-middle manipulation attacks. 6. Testing, Diagnostics, and Troubleshooting