ITIN (Individual Taxpayer Identification Number) filter. A first-class entity

Source: itin.phisql (spec v1.3.0)

PhiSQL

-- ITIN (Individual Taxpayer Identification Number) filter. A first-class entity
-- type for the U.S. ITIN, which has the SSN's shape but always begins with 9
-- (e.g. 912-70-1234). It is its own filter, so ITINs are labelled itin rather than
-- ssn and a policy can handle the two independently. The optional onlyValidRanges
-- flag (default FALSE) keeps only ITINs whose fourth and fifth digits fall in the
-- ranges the IRS issues; with it off, any 9XX-XX-XXXX value is detected, including
-- ATINs (9XX-93-XXXX). It is set through the filter OPTIONS passthrough, like EIN's
-- onlyValidPrefixes. Added to schema 1.3.0 in place (additive). Compiles to itin.json.

POLICY itin;

REDACT SSN WITH LAST_4;
REDACT ITIN WITH LAST_4 OPTIONS (onlyValidRanges = TRUE);

Compiles to

{
  "identifiers": {
    "ssn": {
      "ssnFilterStrategies": [
        {
          "strategy": "LAST_4"
        }
      ]
    },
    "itin": {
      "itinFilterStrategies": [
        {
          "strategy": "LAST_4"
        }
      ],
      "onlyValidRanges": true
    }
  }
}