Australian Company Number (Microsoft built-in)
Catalogue reference for the Microsoft Purview built-in Australia Company Number sensitive information type, which detects a nine-digit Australian Company Number passing the ACN checksum, corroborated by company-number keywords. Microsoft recommends high confidence (85) for the built-in entity. This YAML-only record lets a package recipe include the Microsoft entity explicitly; it does not reproduce Microsoft's built-in regular expressions, keyword dictionaries, checksums or XML.
- Type
- keyword_list
- Confidence
- medium
- Confidence justification
- Medium confidence for this YAML-only record: its keyword logic finds references to the built-in entity name with Microsoft Purview context, not populated values. Microsoft's own recommended confidence for the entity is 85. The record does not claim to reproduce Microsoft's proprietary detection logic.
- Jurisdictions
- au
- Regulations
- Anti-Money Laundering and Counter-Terrorism Financing Act 2006 (Cth), NDB Scheme (Cth), Privacy Act 1988 (Cth)
- Frameworks
- ISO 27001
- Data categories
- pii, government-id
- Scope
- specific
- Risk rating
- 5
Should match
Australian Company Number built-in SIT— Microsoft built-in entity nameAustralia Company Number catalogue reference— Name variant used for registry discoveryDLP policy inventory - Microsoft Purview Rule: Builtin-au-company-number-builtin Condition: Australia Company Number (built-in entity b1fba4f7-7b3e-4bb9-8f9a-9366df604dbb), high confidence, instance count 1 or more Action: notify sender— DLP rule inventory row naming the built-in entity with Microsoft Purview context
Should not match
ACN: 004 085 616— Populated value or sibling reference without the built-in entity nameAustralian Business Number register— Populated value or sibling reference without the built-in entity nameCompany registration extract catalogue— Populated value or sibling reference without the built-in entity name
Known false positives
- Documentation and policy inventories can mention the Microsoft built-in entity by name. Mitigation: Treat this YAML-only record as catalogue discovery; enable the Microsoft entity for value detection.
- The custom SIT au-company-number detects the same data; deploying both doubles matches on the same content. Mitigation: Pick one per package. The custom SIT is the default; include this built-in only by an explicit recipe decision.