curl --request POST \
  --url https://{base_url_domain}/api/global/v1/inventory/products \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data @- <<EOF
{
  "resource": {
    "type": "Product",
    "vendor_sku": "Vendor-SKU-1AD2",
    "external_id": "11-993-9048",
    "barcodes": [
      "956623520-4",
      "O-VS-Oregano-p3"
    ],
    "is_available": true,
    "is_visible": true,
    "lot_type": {
      "type": "LotType",
      "id": 4
    },
    "weight": {
      "value": 20
    },
    "dimensions": {
      "length": 8,
      "width": 6,
      "height": 4
    },
    "volume": {
      "value": 300
    },
    "inventory": {
      "backorders": true,
      "dynamic_allocation": true,
      "virtual_inventory": "optimistic"
    },
    "export": {
      "description": "Plastic children's toy with steel weights and ball bearings",
      "customs_value": {
        "amount": 99,
        "currency": "USD"
      },
      "country_of_manufacture": "TW",
      "hs_base_code": "8518.30",
      "hs_country_extension": [
        {
          "country_id": "TW",
          "extension": "002"
        },
        {
          "country_id": "US",
          "extension": "011"
        }
      ]
    },
    "regulated_goods": {
      "regulation": {
        "type": "Regulation",
        "id": 123
      },
      "technical_name": "Hydro Polymer Acetylene Coating",
      "additional_information": "Flamable Liquid",
      "net_weight": {
        "value": 20
      },
      "container_type": "Plastic Box",
      "container_meets_hazmat_specs": true,
      "regulation_units": 5
    },
    "packaging": {
      "require_packaging": true,
      "require_weight_check": true,
      "require_confirmation_per_item": true,
      "unit_quantity": 1,
      "bulk_quantity": 10,
      "max_per_package": 15,
      "is_ship_separately": true,
      "ship_separately_tag": "PVC",
      "can_tip": true,
      "can_contain_other_items": true,
      "is_handling_surcharge": true
    },
    "custom_fields": [
      {
        "code": "color",
        "value": 13,
        "label": "Red and Black"
      },
      {
        "code": "cost_of_goods",
        "value": 41.32
      },
      {
        "code": "allow_mailer",
        "value": true
      }
    ],
    "sku": "SKU-1AD",
    "name": "Test Product",
    "is_enabled": true
  }
}
EOF

import requests

url = "https://{base_url_domain}/api/global/v1/inventory/products"

payload = { "resource": {
        "type": "Product",
        "vendor_sku": "Vendor-SKU-1AD2",
        "external_id": "11-993-9048",
        "barcodes": ["956623520-4", "O-VS-Oregano-p3"],
        "is_available": True,
        "is_visible": True,
        "lot_type": {
            "type": "LotType",
            "id": 4
        },
        "weight": { "value": 20 },
        "dimensions": {
            "length": 8,
            "width": 6,
            "height": 4
        },
        "volume": { "value": 300 },
        "inventory": {
            "backorders": True,
            "dynamic_allocation": True,
            "virtual_inventory": "optimistic"
        },
        "export": {
            "description": "Plastic children's toy with steel weights and ball bearings",
            "customs_value": {
                "amount": 99,
                "currency": "USD"
            },
            "country_of_manufacture": "TW",
            "hs_base_code": "8518.30",
            "hs_country_extension": [
                {
                    "country_id": "TW",
                    "extension": "002"
                },
                {
                    "country_id": "US",
                    "extension": "011"
                }
            ]
        },
        "regulated_goods": {
            "regulation": {
                "type": "Regulation",
                "id": 123
            },
            "technical_name": "Hydro Polymer Acetylene Coating",
            "additional_information": "Flamable Liquid",
            "net_weight": { "value": 20 },
            "container_type": "Plastic Box",
            "container_meets_hazmat_specs": True,
            "regulation_units": 5
        },
        "packaging": {
            "require_packaging": True,
            "require_weight_check": True,
            "require_confirmation_per_item": True,
            "unit_quantity": 1,
            "bulk_quantity": 10,
            "max_per_package": 15,
            "is_ship_separately": True,
            "ship_separately_tag": "PVC",
            "can_tip": True,
            "can_contain_other_items": True,
            "is_handling_surcharge": True
        },
        "custom_fields": [
            {
                "code": "color",
                "value": 13,
                "label": "Red and Black"
            },
            {
                "code": "cost_of_goods",
                "value": 41.32
            },
            {
                "code": "allow_mailer",
                "value": True
            }
        ],
        "sku": "SKU-1AD",
        "name": "Test Product",
        "is_enabled": True
    } }
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    resource: {
      type: 'Product',
      vendor_sku: 'Vendor-SKU-1AD2',
      external_id: '11-993-9048',
      barcodes: ['956623520-4', 'O-VS-Oregano-p3'],
      is_available: true,
      is_visible: true,
      lot_type: {type: 'LotType', id: 4},
      weight: {value: 20},
      dimensions: {length: 8, width: 6, height: 4},
      volume: {value: 300},
      inventory: {backorders: true, dynamic_allocation: true, virtual_inventory: 'optimistic'},
      export: {
        description: 'Plastic children\'s toy with steel weights and ball bearings',
        customs_value: {amount: 99, currency: 'USD'},
        country_of_manufacture: 'TW',
        hs_base_code: '8518.30',
        hs_country_extension: [{country_id: 'TW', extension: '002'}, {country_id: 'US', extension: '011'}]
      },
      regulated_goods: {
        regulation: {type: 'Regulation', id: 123},
        technical_name: 'Hydro Polymer Acetylene Coating',
        additional_information: 'Flamable Liquid',
        net_weight: {value: 20},
        container_type: 'Plastic Box',
        container_meets_hazmat_specs: true,
        regulation_units: 5
      },
      packaging: {
        require_packaging: true,
        require_weight_check: true,
        require_confirmation_per_item: true,
        unit_quantity: 1,
        bulk_quantity: 10,
        max_per_package: 15,
        is_ship_separately: true,
        ship_separately_tag: 'PVC',
        can_tip: true,
        can_contain_other_items: true,
        is_handling_surcharge: true
      },
      custom_fields: [
        {code: 'color', value: 13, label: 'Red and Black'},
        {code: 'cost_of_goods', value: 41.32},
        {code: 'allow_mailer', value: true}
      ],
      sku: 'SKU-1AD',
      name: 'Test Product',
      is_enabled: true
    }
  })
};

fetch('https://{base_url_domain}/api/global/v1/inventory/products', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://{base_url_domain}/api/global/v1/inventory/products",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'resource' => [
        'type' => 'Product',
        'vendor_sku' => 'Vendor-SKU-1AD2',
        'external_id' => '11-993-9048',
        'barcodes' => [
                '956623520-4',
                'O-VS-Oregano-p3'
        ],
        'is_available' => true,
        'is_visible' => true,
        'lot_type' => [
                'type' => 'LotType',
                'id' => 4
        ],
        'weight' => [
                'value' => 20
        ],
        'dimensions' => [
                'length' => 8,
                'width' => 6,
                'height' => 4
        ],
        'volume' => [
                'value' => 300
        ],
        'inventory' => [
                'backorders' => true,
                'dynamic_allocation' => true,
                'virtual_inventory' => 'optimistic'
        ],
        'export' => [
                'description' => 'Plastic children\'s toy with steel weights and ball bearings',
                'customs_value' => [
                                'amount' => 99,
                                'currency' => 'USD'
                ],
                'country_of_manufacture' => 'TW',
                'hs_base_code' => '8518.30',
                'hs_country_extension' => [
                                [
                                                                'country_id' => 'TW',
                                                                'extension' => '002'
                                ],
                                [
                                                                'country_id' => 'US',
                                                                'extension' => '011'
                                ]
                ]
        ],
        'regulated_goods' => [
                'regulation' => [
                                'type' => 'Regulation',
                                'id' => 123
                ],
                'technical_name' => 'Hydro Polymer Acetylene Coating',
                'additional_information' => 'Flamable Liquid',
                'net_weight' => [
                                'value' => 20
                ],
                'container_type' => 'Plastic Box',
                'container_meets_hazmat_specs' => true,
                'regulation_units' => 5
        ],
        'packaging' => [
                'require_packaging' => true,
                'require_weight_check' => true,
                'require_confirmation_per_item' => true,
                'unit_quantity' => 1,
                'bulk_quantity' => 10,
                'max_per_package' => 15,
                'is_ship_separately' => true,
                'ship_separately_tag' => 'PVC',
                'can_tip' => true,
                'can_contain_other_items' => true,
                'is_handling_surcharge' => true
        ],
        'custom_fields' => [
                [
                                'code' => 'color',
                                'value' => 13,
                                'label' => 'Red and Black'
                ],
                [
                                'code' => 'cost_of_goods',
                                'value' => 41.32
                ],
                [
                                'code' => 'allow_mailer',
                                'value' => true
                ]
        ],
        'sku' => 'SKU-1AD',
        'name' => 'Test Product',
        'is_enabled' => true
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://{base_url_domain}/api/global/v1/inventory/products"

	payload := strings.NewReader("{\n  \"resource\": {\n    \"type\": \"Product\",\n    \"vendor_sku\": \"Vendor-SKU-1AD2\",\n    \"external_id\": \"11-993-9048\",\n    \"barcodes\": [\n      \"956623520-4\",\n      \"O-VS-Oregano-p3\"\n    ],\n    \"is_available\": true,\n    \"is_visible\": true,\n    \"lot_type\": {\n      \"type\": \"LotType\",\n      \"id\": 4\n    },\n    \"weight\": {\n      \"value\": 20\n    },\n    \"dimensions\": {\n      \"length\": 8,\n      \"width\": 6,\n      \"height\": 4\n    },\n    \"volume\": {\n      \"value\": 300\n    },\n    \"inventory\": {\n      \"backorders\": true,\n      \"dynamic_allocation\": true,\n      \"virtual_inventory\": \"optimistic\"\n    },\n    \"export\": {\n      \"description\": \"Plastic children's toy with steel weights and ball bearings\",\n      \"customs_value\": {\n        \"amount\": 99,\n        \"currency\": \"USD\"\n      },\n      \"country_of_manufacture\": \"TW\",\n      \"hs_base_code\": \"8518.30\",\n      \"hs_country_extension\": [\n        {\n          \"country_id\": \"TW\",\n          \"extension\": \"002\"\n        },\n        {\n          \"country_id\": \"US\",\n          \"extension\": \"011\"\n        }\n      ]\n    },\n    \"regulated_goods\": {\n      \"regulation\": {\n        \"type\": \"Regulation\",\n        \"id\": 123\n      },\n      \"technical_name\": \"Hydro Polymer Acetylene Coating\",\n      \"additional_information\": \"Flamable Liquid\",\n      \"net_weight\": {\n        \"value\": 20\n      },\n      \"container_type\": \"Plastic Box\",\n      \"container_meets_hazmat_specs\": true,\n      \"regulation_units\": 5\n    },\n    \"packaging\": {\n      \"require_packaging\": true,\n      \"require_weight_check\": true,\n      \"require_confirmation_per_item\": true,\n      \"unit_quantity\": 1,\n      \"bulk_quantity\": 10,\n      \"max_per_package\": 15,\n      \"is_ship_separately\": true,\n      \"ship_separately_tag\": \"PVC\",\n      \"can_tip\": true,\n      \"can_contain_other_items\": true,\n      \"is_handling_surcharge\": true\n    },\n    \"custom_fields\": [\n      {\n        \"code\": \"color\",\n        \"value\": 13,\n        \"label\": \"Red and Black\"\n      },\n      {\n        \"code\": \"cost_of_goods\",\n        \"value\": 41.32\n      },\n      {\n        \"code\": \"allow_mailer\",\n        \"value\": true\n      }\n    ],\n    \"sku\": \"SKU-1AD\",\n    \"name\": \"Test Product\",\n    \"is_enabled\": true\n  }\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://{base_url_domain}/api/global/v1/inventory/products")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"resource\": {\n    \"type\": \"Product\",\n    \"vendor_sku\": \"Vendor-SKU-1AD2\",\n    \"external_id\": \"11-993-9048\",\n    \"barcodes\": [\n      \"956623520-4\",\n      \"O-VS-Oregano-p3\"\n    ],\n    \"is_available\": true,\n    \"is_visible\": true,\n    \"lot_type\": {\n      \"type\": \"LotType\",\n      \"id\": 4\n    },\n    \"weight\": {\n      \"value\": 20\n    },\n    \"dimensions\": {\n      \"length\": 8,\n      \"width\": 6,\n      \"height\": 4\n    },\n    \"volume\": {\n      \"value\": 300\n    },\n    \"inventory\": {\n      \"backorders\": true,\n      \"dynamic_allocation\": true,\n      \"virtual_inventory\": \"optimistic\"\n    },\n    \"export\": {\n      \"description\": \"Plastic children's toy with steel weights and ball bearings\",\n      \"customs_value\": {\n        \"amount\": 99,\n        \"currency\": \"USD\"\n      },\n      \"country_of_manufacture\": \"TW\",\n      \"hs_base_code\": \"8518.30\",\n      \"hs_country_extension\": [\n        {\n          \"country_id\": \"TW\",\n          \"extension\": \"002\"\n        },\n        {\n          \"country_id\": \"US\",\n          \"extension\": \"011\"\n        }\n      ]\n    },\n    \"regulated_goods\": {\n      \"regulation\": {\n        \"type\": \"Regulation\",\n        \"id\": 123\n      },\n      \"technical_name\": \"Hydro Polymer Acetylene Coating\",\n      \"additional_information\": \"Flamable Liquid\",\n      \"net_weight\": {\n        \"value\": 20\n      },\n      \"container_type\": \"Plastic Box\",\n      \"container_meets_hazmat_specs\": true,\n      \"regulation_units\": 5\n    },\n    \"packaging\": {\n      \"require_packaging\": true,\n      \"require_weight_check\": true,\n      \"require_confirmation_per_item\": true,\n      \"unit_quantity\": 1,\n      \"bulk_quantity\": 10,\n      \"max_per_package\": 15,\n      \"is_ship_separately\": true,\n      \"ship_separately_tag\": \"PVC\",\n      \"can_tip\": true,\n      \"can_contain_other_items\": true,\n      \"is_handling_surcharge\": true\n    },\n    \"custom_fields\": [\n      {\n        \"code\": \"color\",\n        \"value\": 13,\n        \"label\": \"Red and Black\"\n      },\n      {\n        \"code\": \"cost_of_goods\",\n        \"value\": 41.32\n      },\n      {\n        \"code\": \"allow_mailer\",\n        \"value\": true\n      }\n    ],\n    \"sku\": \"SKU-1AD\",\n    \"name\": \"Test Product\",\n    \"is_enabled\": true\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://{base_url_domain}/api/global/v1/inventory/products")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"resource\": {\n    \"type\": \"Product\",\n    \"vendor_sku\": \"Vendor-SKU-1AD2\",\n    \"external_id\": \"11-993-9048\",\n    \"barcodes\": [\n      \"956623520-4\",\n      \"O-VS-Oregano-p3\"\n    ],\n    \"is_available\": true,\n    \"is_visible\": true,\n    \"lot_type\": {\n      \"type\": \"LotType\",\n      \"id\": 4\n    },\n    \"weight\": {\n      \"value\": 20\n    },\n    \"dimensions\": {\n      \"length\": 8,\n      \"width\": 6,\n      \"height\": 4\n    },\n    \"volume\": {\n      \"value\": 300\n    },\n    \"inventory\": {\n      \"backorders\": true,\n      \"dynamic_allocation\": true,\n      \"virtual_inventory\": \"optimistic\"\n    },\n    \"export\": {\n      \"description\": \"Plastic children's toy with steel weights and ball bearings\",\n      \"customs_value\": {\n        \"amount\": 99,\n        \"currency\": \"USD\"\n      },\n      \"country_of_manufacture\": \"TW\",\n      \"hs_base_code\": \"8518.30\",\n      \"hs_country_extension\": [\n        {\n          \"country_id\": \"TW\",\n          \"extension\": \"002\"\n        },\n        {\n          \"country_id\": \"US\",\n          \"extension\": \"011\"\n        }\n      ]\n    },\n    \"regulated_goods\": {\n      \"regulation\": {\n        \"type\": \"Regulation\",\n        \"id\": 123\n      },\n      \"technical_name\": \"Hydro Polymer Acetylene Coating\",\n      \"additional_information\": \"Flamable Liquid\",\n      \"net_weight\": {\n        \"value\": 20\n      },\n      \"container_type\": \"Plastic Box\",\n      \"container_meets_hazmat_specs\": true,\n      \"regulation_units\": 5\n    },\n    \"packaging\": {\n      \"require_packaging\": true,\n      \"require_weight_check\": true,\n      \"require_confirmation_per_item\": true,\n      \"unit_quantity\": 1,\n      \"bulk_quantity\": 10,\n      \"max_per_package\": 15,\n      \"is_ship_separately\": true,\n      \"ship_separately_tag\": \"PVC\",\n      \"can_tip\": true,\n      \"can_contain_other_items\": true,\n      \"is_handling_surcharge\": true\n    },\n    \"custom_fields\": [\n      {\n        \"code\": \"color\",\n        \"value\": 13,\n        \"label\": \"Red and Black\"\n      },\n      {\n        \"code\": \"cost_of_goods\",\n        \"value\": 41.32\n      },\n      {\n        \"code\": \"allow_mailer\",\n        \"value\": true\n      }\n    ],\n    \"sku\": \"SKU-1AD\",\n    \"name\": \"Test Product\",\n    \"is_enabled\": true\n  }\n}"

response = http.request(request)
puts response.read_body

{
  "resource": {
    "type": "<string>",
    "id": 1
  },
  "meta": {
    "processing_time": 123
  }
}

{
  "errors": [
    {
      "type": "parameters",
      "message": "The supplied parameters are invalid.",
      "details": [
        {
          "key": "hold_until_date",
          "message": "The date must be in the future."
        }
      ]
    }
  ]
}

{
  "errors": [
    {
      "type": "unable_to_process",
      "message": "The supplied parameters are invalid.",
      "details": [
        {
          "key": "hold_until_date",
          "message": "The date must be in the future."
        }
      ]
    }
  ]
}