Purchase invoice details

Use this API to get the details of a purchase invoice, including seller and buyer information, the list of goods/services and the tax rate summary.

POST

URLhttps://open-api.tingee.vn/v1/e-invoice/input/detail

Get the details of a purchase invoice by invoiceCode.

Header Request

Header	Required	Description
`Content-Type`	✓	`application/json`
`x-client-id`	✓	Partner identifier issued by TINGEE.
`x-signature`	✓	HMAC SHA512 authentication signature. See How to generate the signature.
`x-request-timestamp`	✓	Time the request is sent (format: `yyyyMMddHHmmssSSS`, UTC+7)

Body Parameter

Field	Type	Required	Description
`merchantId`	number	~	Merchant ID (Required if you connect with a Master Merchant account).
`accountId`	number	✕	E-invoice account ID (from List accounts). Leave empty to use the default account.
`invoiceCode`	string	✓	Invoice identifier, from the List purchase invoices API.

Code samples

cURL
NestJS
C#
Java
PHP

curl --location --request POST 'https://open-api.tingee.vn/v1/e-invoice/input/detail' \
--header 'accept: application/json' \
--header 'x-client-id: YOUR_CLIENT_ID' \
--header 'x-request-timestamp: 20240509154004003' \
--header 'x-signature: YOUR_SIGNATURE' \
--header 'Content-Type: application/json' \
--data '{
  "invoiceCode": "a1b2c3d4-5e6f-7a8b-9c0d-1e2f3a4b5c6d"
}'

import axios from "axios";
import { createHmac } from "crypto";

const CLIENT_ID = "YOUR_CLIENT_ID";
const SECRET_KEY = "YOUR_SECRET_KEY";

// Timestamp in UTC+7, format yyyyMMddHHmmssSSS
function getTimestamp() {
    return new Date(Date.now() + 7 * 60 * 60 * 1000)
        .toISOString()
        .replace(/[-:TZ.]/g, "")
        .slice(0, 17);
}

async function eInvoiceInputDetail() {
    const body = {
        invoiceCode: "a1b2c3d4-5e6f-7a8b-9c0d-1e2f3a4b5c6d",
    };

    const bodyJson = JSON.stringify(body);
    const timestamp = getTimestamp();
    const signature = createHmac("sha512", SECRET_KEY)
        .update(`${timestamp}:${bodyJson}`)
        .digest("hex");

    const res = await axios.request({
        method: "POST",
        url: "https://open-api.tingee.vn/v1/e-invoice/input/detail",
        data: bodyJson,
        headers: {
            accept: "application/json",
            "Content-Type": "application/json",
            "x-client-id": CLIENT_ID,
            "x-request-timestamp": timestamp,
            "x-signature": signature,
        },
    });

    console.log(res.data);
}

eInvoiceInputDetail();

using System;
using System.Net.Http;
using System.Security.Cryptography;
using System.Text;
using System.Text.Encodings.Web;
using System.Text.Json;
using System.Threading.Tasks;

public class Program
{
    private const string ClientId = "YOUR_CLIENT_ID";
    private const string SecretKey = "YOUR_SECRET_KEY";
    private static readonly HttpClient Client = new HttpClient();

    public static async Task Main()
    {
        var body = new
        {
            invoiceCode = "a1b2c3d4-5e6f-7a8b-9c0d-1e2f3a4b5c6d"
        };

        // Do not escape non-ASCII / special characters so the JSON matches TINGEE's JSON.stringify
        var jsonOptions = new JsonSerializerOptions { Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping };
        var bodyJson = JsonSerializer.Serialize(body, jsonOptions);

        // Timestamp in UTC+7, format yyyyMMddHHmmssSSS
        var timestamp = DateTime.UtcNow.AddHours(7).ToString("yyyyMMddHHmmssfff");
        var signature = HmacSha512(SecretKey, $"{timestamp}:{bodyJson}");

        var request = new HttpRequestMessage(HttpMethod.Post, "https://open-api.tingee.vn/v1/e-invoice/input/detail");
        request.Headers.Add("accept", "application/json");
        request.Headers.Add("x-client-id", ClientId);
        request.Headers.Add("x-request-timestamp", timestamp);
        request.Headers.Add("x-signature", signature);
        request.Content = new StringContent(bodyJson, Encoding.UTF8, "application/json");

        var response = await Client.SendAsync(request);
        Console.WriteLine(await response.Content.ReadAsStringAsync());
    }

    private static string HmacSha512(string key, string message)
    {
        using var hmac = new HMACSHA512(Encoding.UTF8.GetBytes(key));
        var hash = hmac.ComputeHash(Encoding.UTF8.GetBytes(message));
        return Convert.ToHexString(hash).ToLower();
    }
}

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.nio.charset.StandardCharsets;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;

public class Main {
    private static final String CLIENT_ID = "YOUR_CLIENT_ID";
    private static final String SECRET_KEY = "YOUR_SECRET_KEY";

    public static void main(String[] args) throws Exception {
        // Minified JSON, same as JSON.stringify()
        String bodyJson = "{\"invoiceCode\":\"a1b2c3d4-5e6f-7a8b-9c0d-1e2f3a4b5c6d\"}";

        // Timestamp in UTC+7, format yyyyMMddHHmmssSSS
        String timestamp = ZonedDateTime.now(ZoneId.of("Asia/Ho_Chi_Minh"))
                .format(DateTimeFormatter.ofPattern("yyyyMMddHHmmssSSS"));
        String signature = hmacSha512(SECRET_KEY, timestamp + ":" + bodyJson);

        HttpRequest request = HttpRequest.newBuilder()
                .uri(URI.create("https://open-api.tingee.vn/v1/e-invoice/input/detail"))
                .header("accept", "application/json")
                .header("Content-Type", "application/json")
                .header("x-client-id", CLIENT_ID)
                .header("x-request-timestamp", timestamp)
                .header("x-signature", signature)
                .method("POST", HttpRequest.BodyPublishers.ofString(bodyJson, StandardCharsets.UTF_8))
                .build();

        HttpResponse<String> response = HttpClient.newHttpClient()
                .send(request, HttpResponse.BodyHandlers.ofString());
        System.out.println(response.body());
    }

    private static String hmacSha512(String key, String data) throws Exception {
        Mac mac = Mac.getInstance("HmacSHA512");
        mac.init(new SecretKeySpec(key.getBytes(StandardCharsets.UTF_8), "HmacSHA512"));
        byte[] hash = mac.doFinal(data.getBytes(StandardCharsets.UTF_8));
        StringBuilder hex = new StringBuilder();
        for (byte b : hash) hex.append(String.format("%02x", b));
        return hex.toString();
    }
}

<?php
$clientId = "YOUR_CLIENT_ID";
$secretKey = "YOUR_SECRET_KEY";

$body = [
    "invoiceCode" => "a1b2c3d4-5e6f-7a8b-9c0d-1e2f3a4b5c6d",
];

// Do not escape "/" or non-ASCII characters so the JSON matches TINGEE's JSON.stringify
$bodyJson = json_encode($body, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);

// Timestamp in UTC+7, format yyyyMMddHHmmssSSS
$now = new DateTime("now", new DateTimeZone("Asia/Ho_Chi_Minh"));
$timestamp = $now->format("YmdHisv");
$signature = hash_hmac("sha512", $timestamp . ":" . $bodyJson, $secretKey);

$ch = curl_init();
curl_setopt_array($ch, [
    CURLOPT_URL => "https://open-api.tingee.vn/v1/e-invoice/input/detail",
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => "POST",
    CURLOPT_POSTFIELDS => $bodyJson,
    CURLOPT_HTTPHEADER => [
        "Accept: application/json",
        "Content-Type: application/json",
        "x-client-id: " . $clientId,
        "x-request-timestamp: " . $timestamp,
        "x-signature: " . $signature,
    ],
]);

$response = curl_exec($ch);
if ($response === false) {
    echo "cURL Error: " . curl_error($ch);
} else {
    echo $response;
}
curl_close($ch);

Sample Response

{
  "code": "00",
  "message": "Success",
  "data": {
    "invoiceCode": "a1b2c3d4-5e6f-7a8b-9c0d-1e2f3a4b5c6d",
    "fileHistoryId": "f9e8d7c6-b5a4-4321-9876-543210fedcba",
    "invoiceName": "Hóa đơn giá trị gia tăng",
    "invoicePattern": "1",
    "invoiceSeries": "C26TAA",
    "invoiceNo": "0000125",
    "invoiceDate": "2026-10-05",
    "signedDate": "2026-10-05",
    "receivedDate": "2026-10-06",
    "approvedDate": null,
    "paymentDate": null,
    "currency": "VND",
    "exchangeRate": 1,
    "paymentMethod": "TM/CK",
    "sellerName": "CÔNG TY TNHH ABC",
    "sellerTaxCode": "0101234567",
    "sellerAddress": "Hà Nội",
    "buyerName": "CÔNG TY CP XYZ",
    "buyerTaxCode": "0109876543",
    "buyerAddress": "TP. Hồ Chí Minh",
    "totalBeforeTax": 1000000,
    "taxAmount": 80000,
    "discountAmount": 0,
    "totalAfterTax": 1080000,
    "amountInWords": "Một triệu không trăm tám mươi nghìn đồng",
    "invoiceStatus": 1,
    "approvalStatus": 1,
    "invoiceType": 1,
    "note": null,
    "items": [
      {
        "id": 987654,
        "lineNumber": 1,
        "itemName": "Dịch vụ phần mềm",
        "unitName": "Gói",
        "quantity": 1,
        "unitPrice": 1000000,
        "totalBeforeTax": 1000000,
        "taxRate": "8%",
        "taxAmount": 80000,
        "itemType": 1,
        "isPromotion": false
      }
    ],
    "taxRateSummaries": [
      {
        "id": 55501,
        "taxRate": "8%",
        "taxAmount": 80000
      }
    ]
  }
}

Field	Type	Description
`code`	string	Result code (`00` = Success).
`message`	string	Response message.
`data.invoiceCode`	string	Invoice identifier.
`data.fileHistoryId`	string	Invoice file history ID at the provider.
`data.invoiceName`, `invoicePattern`, `invoiceSeries`, `invoiceNo`	string	Invoice name, template number (mẫu số), invoice symbol (ký hiệu) and invoice number.
`data.invoiceDate`, `signedDate`, `receivedDate`, `approvedDate`, `paymentDate`	string	Issue date, signing date, received date, approval date, payment date.
`data.currency`, `exchangeRate`	string, number	Currency (default `VND`) and exchange rate (default `1`).
`data.paymentMethod`	string	Payment method.
`data.sellerName`, `sellerTaxCode`, `sellerAddress`	string	Seller information.
`data.buyerName`, `buyerTaxCode`, `buyerAddress`	string	Buyer information.
`data.totalBeforeTax`, `taxAmount`, `discountAmount`, `totalAfterTax`	number	Total before tax, tax amount, discount, total payment.
`data.amountInWords`	string	Amount in words.
`data.invoiceStatus`	number	Invoice status (as provided by the provider).
`data.approvalStatus`	number	Approval status: `1` Pending approval, `2` Approved, `3` Rejected, `4` Cancelled, `5` Processed.
`data.invoiceType`	number	Invoice type (as provided by the provider).
`data.note`	string	Note (if any).
`data.items[]`	array	List of goods/service lines: `id`, `lineNumber` (line number), `itemName`, `unitName`, `quantity`, `unitPrice`, `totalBeforeTax` (amount before tax), `taxRate`, `taxAmount`, `itemType` (`1` Goods/Services, `4` Note), `isPromotion` (promotional item).
`data.taxRateSummaries[]`	array	Tax amount summary per tax rate: `id`, `taxRate`, `taxAmount`.

Common error codes

Code	Description	How to handle
`400`	Failed to get the purchase invoice details	Check `invoiceCode`. `message` contains the details.
`2036`	The account is not registered for the purchase invoice service	Update the account so that `services` contains `input-invoice` via the Create/Update account API.
`2007`	The provider is not supported	Purchase invoices only support `x-cyber` provider accounts.
`2032`	No default account is configured	Pass `accountId`, or set an account as the default.
`1057`	Account information not found	Check `accountId`.
`1095`, `1096`	Master Merchant `merchantId` error	Pass a `merchantId` belonging to the Master Merchant calling the API.
`90`, `91`, `92`, `97`	Request authentication error (timestamp, client-id, signature)	See System error codes.
`Others`	Other errors	See Error codes.

Header Request​

Body Parameter​

Code samples​

Sample Response​

Common error codes​

Header Request

Body Parameter

Code samples

Sample Response

Common error codes