Appendix 2 — Unsupported features
This appendix lists the transaction features that are not supported on SmartPOS integrations compared to non-SmartPOS PIN pad integrations. Anything not listed here behaves the same as it does on a standard PIN pad.
Unsupported Features
| Feature | Alternative on SmartPOS |
|---|---|
| Delay Online Processing | Use ParameterKeys.TransactionAuthPreference instead — see Transaction flow. |
| On-Device Tipping | Pass the tip into startTransaction() via ParameterKeys.TipAmount. |
| One-Way Card Tokens | None — feature not available on Axium. |
See Parameters that will cause errors for the full list of
startTransaction()parameters that are rejected on SmartPOS — and Appendix 1 for the SDK methods that are not supported.