Error Codes & Security (S16-S17)
§16 — Error codes
XPOS ESDC returns only the prescribed FRCS error codes; any manufacturer-specific message is listed in the User Manual. Representative mappings:
| Code | Meaning |
|---|---|
| 1300 | No card / Secure Element not present |
| 1500 | PIN required |
| 2100 / 2110 | PIN incorrect / attempts remaining |
| 2210 | Secure Element limit reached — audit required |
| 6308 | Certificate not valid for the current date |
§17 — Security & prohibited functions
- PIN handling — the PIN is held only in working memory and is cleared on restart; it must be re-entered after any restart.
- Fixed protocol — the POS-to-SDC contract and its parameters are not user-editable.
- Label enforcement — invoices with labels outside the active tax group are rejected.
- Prescribed responses only — no non-standard error responses are emitted.
- Fiscal integrity — signing and counters are performed solely on the SE; XPOS ESDC cannot alter fiscal data or reset counters without a valid proof-of-audit.