Contazen API Documentation

Update an invoice (header-only)

curl --request PUT \
  --url https://api.contazen.ro/v1/invoices/{id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "date_at": "<string>",
  "due_at": "<string>",
  "info": "<string>",
  "client_id": "<string>",
  "currency": "<string>",
  "exchange_rate": 123,
  "series_id": "<string>",
  "items": [
    {
      "description": "<string>",
      "quantity": 123,
      "price": 123,
      "id": 123,
      "product_id": "<string>",
      "description_extended": "<string>",
      "vat_rate": 19,
      "vat_key": 123,
      "unit": "buc",
      "ubl_um": "H87",
      "ubl_nc": "<string>",
      "ubl_cpv": "<string>",
      "subtotal": 123,
      "vat_amount": 123,
      "total": 123,
      "save_as_product": true
    }
  ]
}
'

import requests

url = "https://api.contazen.ro/v1/invoices/{id}"

payload = {
    "date_at": "<string>",
    "due_at": "<string>",
    "info": "<string>",
    "client_id": "<string>",
    "currency": "<string>",
    "exchange_rate": 123,
    "series_id": "<string>",
    "items": [
        {
            "description": "<string>",
            "quantity": 123,
            "price": 123,
            "id": 123,
            "product_id": "<string>",
            "description_extended": "<string>",
            "vat_rate": 19,
            "vat_key": 123,
            "unit": "buc",
            "ubl_um": "H87",
            "ubl_nc": "<string>",
            "ubl_cpv": "<string>",
            "subtotal": 123,
            "vat_amount": 123,
            "total": 123,
            "save_as_product": True
        }
    ]
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'PUT',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    date_at: '<string>',
    due_at: '<string>',
    info: '<string>',
    client_id: '<string>',
    currency: '<string>',
    exchange_rate: 123,
    series_id: '<string>',
    items: [
      {
        description: '<string>',
        quantity: 123,
        price: 123,
        id: 123,
        product_id: '<string>',
        description_extended: '<string>',
        vat_rate: 19,
        vat_key: 123,
        unit: 'buc',
        ubl_um: 'H87',
        ubl_nc: '<string>',
        ubl_cpv: '<string>',
        subtotal: 123,
        vat_amount: 123,
        total: 123,
        save_as_product: true
      }
    ]
  })
};

fetch('https://api.contazen.ro/v1/invoices/{id}', 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.contazen.ro/v1/invoices/{id}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PUT",
  CURLOPT_POSTFIELDS => json_encode([
    'date_at' => '<string>',
    'due_at' => '<string>',
    'info' => '<string>',
    'client_id' => '<string>',
    'currency' => '<string>',
    'exchange_rate' => 123,
    'series_id' => '<string>',
    'items' => [
        [
                'description' => '<string>',
                'quantity' => 123,
                'price' => 123,
                'id' => 123,
                'product_id' => '<string>',
                'description_extended' => '<string>',
                'vat_rate' => 19,
                'vat_key' => 123,
                'unit' => 'buc',
                'ubl_um' => 'H87',
                'ubl_nc' => '<string>',
                'ubl_cpv' => '<string>',
                'subtotal' => 123,
                'vat_amount' => 123,
                'total' => 123,
                'save_as_product' => 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://api.contazen.ro/v1/invoices/{id}"

	payload := strings.NewReader("{\n  \"date_at\": \"<string>\",\n  \"due_at\": \"<string>\",\n  \"info\": \"<string>\",\n  \"client_id\": \"<string>\",\n  \"currency\": \"<string>\",\n  \"exchange_rate\": 123,\n  \"series_id\": \"<string>\",\n  \"items\": [\n    {\n      \"description\": \"<string>\",\n      \"quantity\": 123,\n      \"price\": 123,\n      \"id\": 123,\n      \"product_id\": \"<string>\",\n      \"description_extended\": \"<string>\",\n      \"vat_rate\": 19,\n      \"vat_key\": 123,\n      \"unit\": \"buc\",\n      \"ubl_um\": \"H87\",\n      \"ubl_nc\": \"<string>\",\n      \"ubl_cpv\": \"<string>\",\n      \"subtotal\": 123,\n      \"vat_amount\": 123,\n      \"total\": 123,\n      \"save_as_product\": true\n    }\n  ]\n}")

	req, _ := http.NewRequest("PUT", 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.put("https://api.contazen.ro/v1/invoices/{id}")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"date_at\": \"<string>\",\n  \"due_at\": \"<string>\",\n  \"info\": \"<string>\",\n  \"client_id\": \"<string>\",\n  \"currency\": \"<string>\",\n  \"exchange_rate\": 123,\n  \"series_id\": \"<string>\",\n  \"items\": [\n    {\n      \"description\": \"<string>\",\n      \"quantity\": 123,\n      \"price\": 123,\n      \"id\": 123,\n      \"product_id\": \"<string>\",\n      \"description_extended\": \"<string>\",\n      \"vat_rate\": 19,\n      \"vat_key\": 123,\n      \"unit\": \"buc\",\n      \"ubl_um\": \"H87\",\n      \"ubl_nc\": \"<string>\",\n      \"ubl_cpv\": \"<string>\",\n      \"subtotal\": 123,\n      \"vat_amount\": 123,\n      \"total\": 123,\n      \"save_as_product\": true\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.contazen.ro/v1/invoices/{id}")

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

request = Net::HTTP::Put.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"date_at\": \"<string>\",\n  \"due_at\": \"<string>\",\n  \"info\": \"<string>\",\n  \"client_id\": \"<string>\",\n  \"currency\": \"<string>\",\n  \"exchange_rate\": 123,\n  \"series_id\": \"<string>\",\n  \"items\": [\n    {\n      \"description\": \"<string>\",\n      \"quantity\": 123,\n      \"price\": 123,\n      \"id\": 123,\n      \"product_id\": \"<string>\",\n      \"description_extended\": \"<string>\",\n      \"vat_rate\": 19,\n      \"vat_key\": 123,\n      \"unit\": \"buc\",\n      \"ubl_um\": \"H87\",\n      \"ubl_nc\": \"<string>\",\n      \"ubl_cpv\": \"<string>\",\n      \"subtotal\": 123,\n      \"vat_amount\": 123,\n      \"total\": 123,\n      \"save_as_product\": true\n    }\n  ]\n}"

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

{
  "success": true,
  "data": {
    "id": "inv_1a2b3c4d5e",
    "object": "invoice",
    "number": "<string>",
    "series": "<string>",
    "date": "2023-12-25",
    "total": 123,
    "full_number": "<string>",
    "due_date": "2023-12-25",
    "client_id": "<string>",
    "client": {
      "id": "cli_1a2b3c4d5e",
      "object": "client",
      "name": "<string>",
      "email": "jsmith@example.com",
      "phone": "<string>",
      "cui": "<string>",
      "cui_prefix": "<string>",
      "rc": "<string>",
      "address": "<string>",
      "city": "<string>",
      "county": "<string>",
      "country": "<string>",
      "postal_code": "<string>",
      "iban": "<string>",
      "bank": "<string>",
      "contact_person": "<string>",
      "created_at": 123,
      "updated_at": 123,
      "metadata": {
        "invoices_count": 123,
        "total_invoiced": 123,
        "unpaid_total": 123
      },
      "stats": {
        "total_invoiced": 123,
        "total_collected": 123,
        "avg_payment_days": 123,
        "last_payment": {
          "date": 123,
          "amount": 123,
          "currency": "<string>",
          "bill_id": "<string>",
          "bill_number": "<string>"
        },
        "monthly_series": [
          {
            "label": "Mar 2026",
            "year": 123,
            "month": 123,
            "invoiced": 123,
            "collected": 123
          }
        ]
      }
    },
    "currency": "RON",
    "exchange_rate": 123,
    "subtotal": 123,
    "vat_amount": 123,
    "subtotal_ron": 123,
    "vat_amount_ron": 123,
    "total_ron": 123,
    "items": [
      {
        "description": "<string>",
        "quantity": 123,
        "price": 123,
        "id": 123,
        "product_id": "<string>",
        "description_extended": "<string>",
        "vat_rate": 19,
        "vat_key": 123,
        "unit": "buc",
        "ubl_um": "H87",
        "ubl_nc": "<string>",
        "ubl_cpv": "<string>",
        "subtotal": 123,
        "vat_amount": 123,
        "total": 123,
        "save_as_product": true
      }
    ],
    "payments": [
      {
        "id": "<string>",
        "object": "payment",
        "amount": 123,
        "currency": "<string>",
        "date": "2023-12-25",
        "type_description": "<string>",
        "reference": "<string>",
        "invoice": {
          "id": "<string>",
          "number": "<string>",
          "total": 123,
          "currency": "<string>"
        },
        "receipt": {
          "id": "<string>",
          "number": "<string>"
        },
        "client": {
          "id": "<string>",
          "name": "<string>"
        },
        "created_at": 123
      }
    ],
    "is_paid": true,
    "paid_at": "2023-12-25",
    "is_void": true,
    "voided_at": "2023-11-07T05:31:56Z",
    "void_reason": "<string>",
    "is_draft": true,
    "is_storno": true,
    "storno_for": "<string>",
    "payment_method": "<string>",
    "notes": "<string>",
    "observations": "<string>",
    "efactura_enabled": true,
    "efactura_submission_id": "<string>",
    "created_at": "2023-11-07T05:31:56Z",
    "modified_at": "2023-11-07T05:31:56Z"
  },
  "meta": {
    "version": "v1",
    "request_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "response_time": "23.45ms"
  }
}

{
  "success": false,
  "error": {
    "message": "<string>",
    "code": "<string>",
    "param": "<string>",
    "doc_url": "<string>"
  },
  "meta": {
    "version": "v1",
    "request_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "response_time": "23.45ms"
  }
}

{
  "success": false,
  "error": {
    "message": "<string>",
    "code": "<string>",
    "param": "<string>",
    "doc_url": "<string>"
  },
  "meta": {
    "version": "v1",
    "request_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "response_time": "23.45ms"
  }
}

{
  "success": false,
  "error": {
    "message": "<string>",
    "code": "<string>",
    "param": "<string>",
    "doc_url": "<string>"
  },
  "meta": {
    "version": "v1",
    "request_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "response_time": "23.45ms"
  }
}

PUT

invoices

{id}

Update an invoice (header-only)

curl --request PUT \
  --url https://api.contazen.ro/v1/invoices/{id} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "date_at": "<string>",
  "due_at": "<string>",
  "info": "<string>",
  "client_id": "<string>",
  "currency": "<string>",
  "exchange_rate": 123,
  "series_id": "<string>",
  "items": [
    {
      "description": "<string>",
      "quantity": 123,
      "price": 123,
      "id": 123,
      "product_id": "<string>",
      "description_extended": "<string>",
      "vat_rate": 19,
      "vat_key": 123,
      "unit": "buc",
      "ubl_um": "H87",
      "ubl_nc": "<string>",
      "ubl_cpv": "<string>",
      "subtotal": 123,
      "vat_amount": 123,
      "total": 123,
      "save_as_product": true
    }
  ]
}
'

import requests

url = "https://api.contazen.ro/v1/invoices/{id}"

payload = {
    "date_at": "<string>",
    "due_at": "<string>",
    "info": "<string>",
    "client_id": "<string>",
    "currency": "<string>",
    "exchange_rate": 123,
    "series_id": "<string>",
    "items": [
        {
            "description": "<string>",
            "quantity": 123,
            "price": 123,
            "id": 123,
            "product_id": "<string>",
            "description_extended": "<string>",
            "vat_rate": 19,
            "vat_key": 123,
            "unit": "buc",
            "ubl_um": "H87",
            "ubl_nc": "<string>",
            "ubl_cpv": "<string>",
            "subtotal": 123,
            "vat_amount": 123,
            "total": 123,
            "save_as_product": True
        }
    ]
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'PUT',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    date_at: '<string>',
    due_at: '<string>',
    info: '<string>',
    client_id: '<string>',
    currency: '<string>',
    exchange_rate: 123,
    series_id: '<string>',
    items: [
      {
        description: '<string>',
        quantity: 123,
        price: 123,
        id: 123,
        product_id: '<string>',
        description_extended: '<string>',
        vat_rate: 19,
        vat_key: 123,
        unit: 'buc',
        ubl_um: 'H87',
        ubl_nc: '<string>',
        ubl_cpv: '<string>',
        subtotal: 123,
        vat_amount: 123,
        total: 123,
        save_as_product: true
      }
    ]
  })
};

fetch('https://api.contazen.ro/v1/invoices/{id}', 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.contazen.ro/v1/invoices/{id}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PUT",
  CURLOPT_POSTFIELDS => json_encode([
    'date_at' => '<string>',
    'due_at' => '<string>',
    'info' => '<string>',
    'client_id' => '<string>',
    'currency' => '<string>',
    'exchange_rate' => 123,
    'series_id' => '<string>',
    'items' => [
        [
                'description' => '<string>',
                'quantity' => 123,
                'price' => 123,
                'id' => 123,
                'product_id' => '<string>',
                'description_extended' => '<string>',
                'vat_rate' => 19,
                'vat_key' => 123,
                'unit' => 'buc',
                'ubl_um' => 'H87',
                'ubl_nc' => '<string>',
                'ubl_cpv' => '<string>',
                'subtotal' => 123,
                'vat_amount' => 123,
                'total' => 123,
                'save_as_product' => 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://api.contazen.ro/v1/invoices/{id}"

	payload := strings.NewReader("{\n  \"date_at\": \"<string>\",\n  \"due_at\": \"<string>\",\n  \"info\": \"<string>\",\n  \"client_id\": \"<string>\",\n  \"currency\": \"<string>\",\n  \"exchange_rate\": 123,\n  \"series_id\": \"<string>\",\n  \"items\": [\n    {\n      \"description\": \"<string>\",\n      \"quantity\": 123,\n      \"price\": 123,\n      \"id\": 123,\n      \"product_id\": \"<string>\",\n      \"description_extended\": \"<string>\",\n      \"vat_rate\": 19,\n      \"vat_key\": 123,\n      \"unit\": \"buc\",\n      \"ubl_um\": \"H87\",\n      \"ubl_nc\": \"<string>\",\n      \"ubl_cpv\": \"<string>\",\n      \"subtotal\": 123,\n      \"vat_amount\": 123,\n      \"total\": 123,\n      \"save_as_product\": true\n    }\n  ]\n}")

	req, _ := http.NewRequest("PUT", 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.put("https://api.contazen.ro/v1/invoices/{id}")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"date_at\": \"<string>\",\n  \"due_at\": \"<string>\",\n  \"info\": \"<string>\",\n  \"client_id\": \"<string>\",\n  \"currency\": \"<string>\",\n  \"exchange_rate\": 123,\n  \"series_id\": \"<string>\",\n  \"items\": [\n    {\n      \"description\": \"<string>\",\n      \"quantity\": 123,\n      \"price\": 123,\n      \"id\": 123,\n      \"product_id\": \"<string>\",\n      \"description_extended\": \"<string>\",\n      \"vat_rate\": 19,\n      \"vat_key\": 123,\n      \"unit\": \"buc\",\n      \"ubl_um\": \"H87\",\n      \"ubl_nc\": \"<string>\",\n      \"ubl_cpv\": \"<string>\",\n      \"subtotal\": 123,\n      \"vat_amount\": 123,\n      \"total\": 123,\n      \"save_as_product\": true\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.contazen.ro/v1/invoices/{id}")

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

request = Net::HTTP::Put.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"date_at\": \"<string>\",\n  \"due_at\": \"<string>\",\n  \"info\": \"<string>\",\n  \"client_id\": \"<string>\",\n  \"currency\": \"<string>\",\n  \"exchange_rate\": 123,\n  \"series_id\": \"<string>\",\n  \"items\": [\n    {\n      \"description\": \"<string>\",\n      \"quantity\": 123,\n      \"price\": 123,\n      \"id\": 123,\n      \"product_id\": \"<string>\",\n      \"description_extended\": \"<string>\",\n      \"vat_rate\": 19,\n      \"vat_key\": 123,\n      \"unit\": \"buc\",\n      \"ubl_um\": \"H87\",\n      \"ubl_nc\": \"<string>\",\n      \"ubl_cpv\": \"<string>\",\n      \"subtotal\": 123,\n      \"vat_amount\": 123,\n      \"total\": 123,\n      \"save_as_product\": true\n    }\n  ]\n}"

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

{
  "success": true,
  "data": {
    "id": "inv_1a2b3c4d5e",
    "object": "invoice",
    "number": "<string>",
    "series": "<string>",
    "date": "2023-12-25",
    "total": 123,
    "full_number": "<string>",
    "due_date": "2023-12-25",
    "client_id": "<string>",
    "client": {
      "id": "cli_1a2b3c4d5e",
      "object": "client",
      "name": "<string>",
      "email": "jsmith@example.com",
      "phone": "<string>",
      "cui": "<string>",
      "cui_prefix": "<string>",
      "rc": "<string>",
      "address": "<string>",
      "city": "<string>",
      "county": "<string>",
      "country": "<string>",
      "postal_code": "<string>",
      "iban": "<string>",
      "bank": "<string>",
      "contact_person": "<string>",
      "created_at": 123,
      "updated_at": 123,
      "metadata": {
        "invoices_count": 123,
        "total_invoiced": 123,
        "unpaid_total": 123
      },
      "stats": {
        "total_invoiced": 123,
        "total_collected": 123,
        "avg_payment_days": 123,
        "last_payment": {
          "date": 123,
          "amount": 123,
          "currency": "<string>",
          "bill_id": "<string>",
          "bill_number": "<string>"
        },
        "monthly_series": [
          {
            "label": "Mar 2026",
            "year": 123,
            "month": 123,
            "invoiced": 123,
            "collected": 123
          }
        ]
      }
    },
    "currency": "RON",
    "exchange_rate": 123,
    "subtotal": 123,
    "vat_amount": 123,
    "subtotal_ron": 123,
    "vat_amount_ron": 123,
    "total_ron": 123,
    "items": [
      {
        "description": "<string>",
        "quantity": 123,
        "price": 123,
        "id": 123,
        "product_id": "<string>",
        "description_extended": "<string>",
        "vat_rate": 19,
        "vat_key": 123,
        "unit": "buc",
        "ubl_um": "H87",
        "ubl_nc": "<string>",
        "ubl_cpv": "<string>",
        "subtotal": 123,
        "vat_amount": 123,
        "total": 123,
        "save_as_product": true
      }
    ],
    "payments": [
      {
        "id": "<string>",
        "object": "payment",
        "amount": 123,
        "currency": "<string>",
        "date": "2023-12-25",
        "type_description": "<string>",
        "reference": "<string>",
        "invoice": {
          "id": "<string>",
          "number": "<string>",
          "total": 123,
          "currency": "<string>"
        },
        "receipt": {
          "id": "<string>",
          "number": "<string>"
        },
        "client": {
          "id": "<string>",
          "name": "<string>"
        },
        "created_at": 123
      }
    ],
    "is_paid": true,
    "paid_at": "2023-12-25",
    "is_void": true,
    "voided_at": "2023-11-07T05:31:56Z",
    "void_reason": "<string>",
    "is_draft": true,
    "is_storno": true,
    "storno_for": "<string>",
    "payment_method": "<string>",
    "notes": "<string>",
    "observations": "<string>",
    "efactura_enabled": true,
    "efactura_submission_id": "<string>",
    "created_at": "2023-11-07T05:31:56Z",
    "modified_at": "2023-11-07T05:31:56Z"
  },
  "meta": {
    "version": "v1",
    "request_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "response_time": "23.45ms"
  }
}

{
  "success": false,
  "error": {
    "message": "<string>",
    "code": "<string>",
    "param": "<string>",
    "doc_url": "<string>"
  },
  "meta": {
    "version": "v1",
    "request_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "response_time": "23.45ms"
  }
}

{
  "success": false,
  "error": {
    "message": "<string>",
    "code": "<string>",
    "param": "<string>",
    "doc_url": "<string>"
  },
  "meta": {
    "version": "v1",
    "request_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "response_time": "23.45ms"
  }
}

{
  "success": false,
  "error": {
    "message": "<string>",
    "code": "<string>",
    "param": "<string>",
    "doc_url": "<string>"
  },
  "meta": {
    "version": "v1",
    "request_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "response_time": "23.45ms"
  }
}

Overview

The update endpoint intentionally has a narrow scope: it accepts only header fields plus an optional full-item rewrite. It does not support spot-editing a single line — send the whole items array if you need to change one row. If you need a structural change to a fiscal invoice (different client, wholesale repricing, etc.), issue POST /invoices/{id}/storno followed by a fresh POST /invoices rather than mutating the original.

Legacy field aliases

Several request fields have aliases that remain accepted for backwards compatibility. New integrations should prefer the canonical names:

Canonical	Legacy aliases
`info`	`observation`, `notes`
`date_at`	`date`
`due_at`	`due_date`

Row-level totals are derived, not accepted

Row objects inside items[] must not carry price_total or account_amount_total — send the components (quantity, price, vat_rate) and the server recomputes both. Sending totals directly used to work in earlier builds and has been a silent source of rounding drift; the fields are now ignored.

Exchange-rate handling

When currency is RON, currency_rate is forced to 1.000 regardless of what you send. For non-RON invoices, a positive exchange_rate propagates into every account_amount_* field on both the invoice header and its rows — so the RON-equivalent totals stay consistent with the foreign-currency totals shown on the PDF.

Edit locks

Four conditions block an edit:

400 invoice_is_storno — the row is itself a reversal.
400 invoice_already_storned — the row has been reversed.
400 invoice_is_paid — paid invoice cannot have totals changed (non-total fields like info and due_at still work).
403 invoice_locked_efactura — ANAF has accepted or validated the invoice via SPV. The error payload includes efactura_status.

PUT and PATCH are interchangeable — both route to the same handler.

Authorizations

Authorization

string

header

required

Use your API key (sk_live_xxx or sk_test_xxx)

Path Parameters

string

required

Invoice CzUid

Body

application/json

date_at

string

ISO date or unix timestamp. Alias - date.

due_at

string | null

ISO date or unix timestamp. Pass empty/null to clear. Alias - due_date.

info

string | null

Free-text notes shown on the PDF. Accepted aliases - observation, notes.

client_id

string

CzUid of an existing firm client; rebinds the invoice to that client's current snapshot.

currency

string

ISO-4217 code. Passing RON resets currency_rate to 1.

exchange_rate

number

Positive FX rate. Ignored for RON invoices. Overrides currency_rate and propagates to all account_amount_* fields.

series_id

string

CzUid (or numeric PK) of a firm_number series owned by the firm. Only used when actually switching series.

items

object[]

Replace the whole line-items array. Each row accepts description, quantity, price, vat_rate, unit, product_czuid, um_id etc. Row-level price_total and account_amount_total are not accepted — they are recomputed from the components.

Show child attributes

Response

Invoice updated

success

boolean

data

object

Show child attributes

API Reference

Update Invoice

Overview

Legacy field aliases

Row-level totals are derived, not accepted

Exchange-rate handling

Edit locks

Authorizations

Path Parameters

Body

Response

​Overview

​Legacy field aliases

​Row-level totals are derived, not accepted

​Exchange-rate handling

​Edit locks

Authorizations

Path Parameters

Body

Response

Overview

Legacy field aliases

Row-level totals are derived, not accepted

Exchange-rate handling

Edit locks