{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/NICategory",
  "title": "NICategory",
  "type": "object",
  "required": [
    "niCategory",
    "workplacePostcode"
  ],
  "properties": {
    "startDate": {
      "description": "The start date of the NI category (YYYY-MM-DD)",
      "type": "string",
      "format": "date",
      "example": "2024-12-02",
      "x-is-date": true
    },
    "niCategory": {
      "$ref": "#/components/schemas/NICategoryLetter"
    },
    "niCategoryID": {
      "description": "Xero unique identifier for the NI category",
      "type": "number",
      "example": 15
    },
    "dateFirstEmployedAsCivilian": {
      "description": "The date in which the employee was first employed as a civilian (YYYY-MM-DD)",
      "type": "string",
      "format": "date",
      "example": "2024-12-02",
      "x-is-date": true
    },
    "workplacePostcode": {
      "description": "The workplace postcode",
      "type": "string",
      "example": "SW1A 1AA"
    }
  },
  "oneOf": [
    {
      "required": [
        "workplacePostcode"
      ],
      "properties": {
        "niCategory": {
          "enum": [
            "F",
            "I",
            "L",
            "S",
            "N",
            "E",
            "D",
            "K"
          ]
        }
      }
    },
    {
      "required": [
        "dateFirstEmployedAsCivilian"
      ],
      "properties": {
        "niCategory": {
          "enum": [
            "V"
          ]
        }
      }
    }
  ]
}