The core fields are consistent everywhere; what varies is the registration identifier, the clearance vs. reporting split, and how the QR/validation reference is delivered.
| Country | Business ID | Model | Validation reference |
|---|---|---|---|
| Saudi Arabia | VAT registration number | Clearance (B2B) / Reporting (B2C) | Cryptographic stamp + QR |
| UAE | Tax Registration Number (TRN) | Peppol 5-corner | Access point routing confirmation |
| Oman | Tax identification number | Five-corner (decentralized, Peppol Authority) | OTA-accredited service provider confirmation |
| Qatar | Tax identification number | Law approved May 2026 — model TBC | Roadmap — TBC |
| Philippines | Taxpayer Identification Number (TIN) | Reporting (BIR EIS) | EIS transmission confirmation |
| Singapore | GST registration number | Peppol network | Access point delivery confirmation |
| Thailand | 13-digit Tax ID + branch code | Voluntary (RD e-Tax Invoice & e-Receipt) | Digital signature + RD submission receipt |
This is a directional comparison to orient a first conversation, not a compliance reference — confirm exact field lists against each country's current published technical specification before go-live.