api.duoleads.com

{
  "properties": {
    "data": {
      "description": "valid, type (gtin8|gtin12|gtin13|gtin14|gln|sscc|unknown), normalised, check_digit (the digit that should be there; string|null, null when the length is unsupported), check_digit_ok, gtin14 (zero-padded; string|null, null for sscc and unsupported lengths), indicator (string|null), reason (string|null), also_valid_as (present only for a gtin13, which is also a valid gln: [gln]; also after op=checkdigit and op=convert that produce a gtin13), converted (op=convert only: the value in the requested format; null when the input's check digit is wrong, in which case valid is false, reason is checksum and type and normalised are those of the input). The GS1 company-prefix boundary is not returned.",
      "properties": {
        "also_valid_as": {
          "items": {
            "type": "string"
          },
          "type": "array"
        },
        "check_digit": {
          "type": [
            "string",
            "null"
          ]
        },
        "check_digit_ok": {
          "type": "boolean"
        },
        "converted": {
          "type": [
            "string",
            "null"
          ]
        },
        "gtin14": {
          "type": [
            "string",
            "null"
          ]
        },
        "indicator": {
          "type": [
            "string",
            "null"
          ]
        },
        "normalised": {
          "type": "string"
        },
        "reason": {
          "type": [
            "string",
            "null"
          ]
        },
        "type": {
          "type": "string"
        },
        "valid": {
          "type": "boolean"
        }
      },
      "type": "object"
    },
    "meta": {
      "$ref": "#/components/schemas/Meta"
    },
    "ok": {
      "const": true
    },
    "route": {
      "const": "/v1/id/gs1"
    },
    "version": {
      "const": "1.0.0"
    }
  },
  "required": [
    "ok",
    "route",
    "version",
    "data",
    "meta"
  ],
  "type": "object"
}