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POST
/
returns
Create Return Request
curl --request POST \
  --url https://api.zinc.com/returns \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "order_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "items": [
    {
      "order_item_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "quantity": 50
    }
  ],
  "notes": "<string>"
}
'
import requests

url = "https://api.zinc.com/returns"

payload = {
    "order_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "items": [
        {
            "order_item_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
            "quantity": 50
        }
    ],
    "notes": "<string>"
}
headers = {
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

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

print(response.text)
const options = {
  method: 'POST',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    order_id: '3c90c3cc-0d44-4b50-8888-8dd25736052a',
    items: [{order_item_id: '3c90c3cc-0d44-4b50-8888-8dd25736052a', quantity: 50}],
    notes: '<string>'
  })
};

fetch('https://api.zinc.com/returns', 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://api.zinc.com/returns",
  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([
    'order_id' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
    'items' => [
        [
                'order_item_id' => '3c90c3cc-0d44-4b50-8888-8dd25736052a',
                'quantity' => 50
        ]
    ],
    'notes' => '<string>'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: <api-key>",
    "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://api.zinc.com/returns"

	payload := strings.NewReader("{\n  \"order_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"items\": [\n    {\n      \"order_item_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n      \"quantity\": 50\n    }\n  ],\n  \"notes\": \"<string>\"\n}")

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

	req.Header.Add("Authorization", "<api-key>")
	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://api.zinc.com/returns")
  .header("Authorization", "<api-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"order_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"items\": [\n    {\n      \"order_item_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n      \"quantity\": 50\n    }\n  ],\n  \"notes\": \"<string>\"\n}")
  .asString();
require 'uri'
require 'net/http'

url = URI("https://api.zinc.com/returns")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = '<api-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"order_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n  \"items\": [\n    {\n      \"order_item_id\": \"3c90c3cc-0d44-4b50-8888-8dd25736052a\",\n      \"quantity\": 50\n    }\n  ],\n  \"notes\": \"<string>\"\n}"

response = http.request(request)
puts response.read_body
{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "order_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "notes": "<string>",
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z",
  "resolution_notes": "<string>",
  "items": [],
  "label_urls": [],
  "merchant_return_id": "<string>"
}
{
  "detail": [
    {
      "loc": [
        "<string>"
      ],
      "msg": "<string>",
      "type": "<string>"
    }
  ]
}
Submit a return request for a previously placed order. Returns are reviewed and resolved asynchronously — subsequent reads will show the current status and any return labels.

​
Request

Required fields:
  • order_id — UUID of the order being returned. The order must belong to the caller and be in order_placed status.
  • items — One or more line items being returned. Each entry has order_item_id (UUID of a line on the order) and quantity (1–100).
  • reason — One of the values in the Reasons table below.
Optional fields:
  • notes — Free-form context (max 2000 characters). Recommended when reason is other.
{
  "order_id": "8c2d…",
  "items": [
    { "order_item_id": "a1b2…", "quantity": 1 }
  ],
  "reason": "damaged",
  "notes": "Arrived with crushed corner."
}

​
Return Reasons

ReasonWhen to use
damagedArrived damaged in transit
not_deliveredPackage never arrived
empty_boxPackage arrived empty / item missing
wrong_itemA different item shipped than what was ordered
defectiveItem works incorrectly / quality issue
not_as_describedItem doesn’t match the listing
wrong_sizeApparel or sizing mismatch
no_longer_neededCustomer changed their mind
forced_cancellationRetailer / system forced cancellation after placement
otherAnything else — include details in notes
Use other only when none of the specific reasons fit. Categorized reasons route faster.

​
Response

A successful request returns the new return request with status: "open" and an empty label_urls array. See Get Return Request for the full response shape.

Authorizations

​
Authorization
string
header
required

Zinc API key (Bearer zn_...)

Headers

​
authorization
string | null

Body

application/json
​
order_id
string<uuid>
required
​
items
ReturnRequestItem · object[]
required

Per-product lines being returned

Minimum array length: 1
​
reason
enum<string>
required

Universal return reason codes (Shopify + Amazon prepaid alignment).

Available options:
damaged,
not_delivered,
empty_box,
wrong_item,
defective,
not_as_described,
wrong_size,
no_longer_needed,
forced_cancellation,
other
​
notes
string | null
Maximum string length: 2000

Response

Successful Response

​
id
string<uuid>
required
​
order_id
string<uuid>
required
​
status
enum<string>
required
Available options:
open,
approved,
denied,
credited
​
reason
enum<string>
required

Universal return reason codes (Shopify + Amazon prepaid alignment).

Available options:
damaged,
not_delivered,
empty_box,
wrong_item,
defective,
not_as_described,
wrong_size,
no_longer_needed,
forced_cancellation,
other
​
notes
string | null
required
​
created_at
string<date-time>
required
​
updated_at
string<date-time>
required
​
resolution_notes
string | null
​
items
ReturnRequestItem · object[]
​
label_urls
string[]
​
merchant_return_id
string | null