{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/TaxID",
  "title": "TaxID",
  "type": "object",
  "description": "Business tax identification number.",
  "properties": {
    "ein": {
      "type": "object",
      "description": "Employer Identification Number for US businesses.",
      "properties": {
        "number": {
          "type": "string",
          "description": "Full EIN. Only provided on write; masked on read.",
          "pattern": "^\\d{9}$"
        }
      }
    }
  }
}