"fields": [
    // Other fields...

    // Include indexing for the variants array
    {
      "name": "variants",
      "type": "object[]",
      "facet": true,
      "index": true,
      "fields": [
        {"name": "combination", "type": "string[]", "facet": true},
        {"name": "ssin", "type": "string", "facet": true},
        {"name": "brandSku", "type": "string", "facet": true},
        {"name": "sellingPrice", "type": "int32", "facet": true},
        {"name": "finalListingPrice", "type": "int32", "facet": true},
        {"name": "internalDiscountPercentage", "type": "int32", "facet": true}
      ]
    },

    // Other fields...
  ],