Greek Tax identification Number
Detects Greek Tax identification Number patterns. This pattern is based on a Microsoft Purview built-in sensitive information type. Due to the numeric format, corroborative evidence keywords are essential for reliable detection.
- Type
- regex
- Engine
- universal
- Confidence
- medium
- Confidence justification
- Medium confidence: nine-digit numbers are extremely common. Greek AFM keywords such as 'ΑΦΜ' or 'φορολογικού μητρώου' are essential for accurate detection. Added context gating and exclusion rules improve precision and reduce incidental matches.
- Detection quality
- Verified
- Jurisdictions
- gr, eu
- Regulations
- gdpr
- Data categories
- pii, financial, government-id
- Scope
- narrow
- Risk rating
- 7
- Platform compatibility
- Purview: Compatible, GCP DLP: Compatible, Macie: Compatible, Zscaler: Compatible, Palo Alto: Compatible, Netskope: Compatible
Pattern
\b\d{9}\bCorroborative evidence keywords
ΑΦΜ, αριθμός φορολογικού μητρώου, tax identification, TIN, φορολογικός, tax identification number, tax number, tax return, IRD, NIF, tax ID, inland revenue, taxpayer identification, Abgabenkontonummer, adóazonosító, adószám, belastingnummer, BSN, burgerservicenummer, CIF (+47 more)
Proximity: 300 characters
Should match
123456789— Nine-digit Greek AFM number987654321— Greek tax identification number112233445— Greek AFM format
Should not match
12345678— Eight digits, too short for Greek AFM1234567890— Ten digits, exceeds Greek AFM formattemplate example placeholder record identifier— Template/sample context should be excluded even when anchor words are present
Known false positives
- Generic numeric sequences in non-tax contexts such as reference numbers or account identifiers Mitigation: Require corroborative evidence keywords within the proximity window to distinguish tax identifiers from general numeric data.
- Numbers from other identification schemes with similar digit patterns Mitigation: Layer with jurisdiction-specific detection to prioritise matches in tax-related documents and cross-reference with other identifier types.