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POST
/
accounting
/
creditNotes
cURL
curl --request POST \
  --url https://api.maesn.dev/accounting/creditNotes \
  --header 'Content-Type: application/json' \
  --header 'X-ACCOUNT-KEY: <x-account-key>' \
  --header 'X-API-KEY: <x-api-key>' \
  --data '
{
  "addresses": [
    {
      "addressLine1": "Main street 45",
      "addressLine2": "2nd floor",
      "city": "Berlin",
      "countryCode": "DE",
      "postalCode": "10243",
      "type": "BILLING"
    }
  ],
  "contactId": "eaa28f49-6028-4b6e-bb12-d8f6278073fc",
  "creditNoteDate": "2025-01-01T00:00:00Z",
  "creditNoteLines": [
    {
      "id": "9fc4f3a2-5b8e-4d1b-8a0c-9f6e7d2f3e4b",
      "description": "SEOUL Guest Chair, red",
      "itemId": "4271",
      "itemName": "RED CHAIR",
      "quantity": 1,
      "taxCode": "TAX19",
      "taxRatePercentage": 19,
      "totalDiscountAmount": 10,
      "totalDiscountPercentage": 10,
      "totalGrossAmount": 109,
      "totalNetAmount": 100,
      "totalTaxAmount": 19,
      "unitAmount": 100,
      "unitDiscountAmount": 10,
      "unitDiscountPercentage": 10,
      "unitName": "PIECE"
    }
  ],
  "creditNoteNumber": "PRES1000",
  "currency": "EUR",
  "paymentStatus": "PENDING",
  "paymentTermId": "21",
  "reference": "RCXF197253F",
  "status": "DRAFT",
  "taxRule": "NET",
  "totalDiscountAmount": 10,
  "totalDiscountPercentage": 10,
  "totalGrossAmount": 109,
  "totalNetAmount": 100,
  "totalTaxAmount": 19
}
'
import requests

url = "https://api.maesn.dev/accounting/creditNotes"

payload = {
    "addresses": [
        {
            "addressLine1": "Main street 45",
            "addressLine2": "2nd floor",
            "city": "Berlin",
            "countryCode": "DE",
            "postalCode": "10243",
            "type": "BILLING"
        }
    ],
    "contactId": "eaa28f49-6028-4b6e-bb12-d8f6278073fc",
    "creditNoteDate": "2025-01-01T00:00:00Z",
    "creditNoteLines": [
        {
            "id": "9fc4f3a2-5b8e-4d1b-8a0c-9f6e7d2f3e4b",
            "description": "SEOUL Guest Chair, red",
            "itemId": "4271",
            "itemName": "RED CHAIR",
            "quantity": 1,
            "taxCode": "TAX19",
            "taxRatePercentage": 19,
            "totalDiscountAmount": 10,
            "totalDiscountPercentage": 10,
            "totalGrossAmount": 109,
            "totalNetAmount": 100,
            "totalTaxAmount": 19,
            "unitAmount": 100,
            "unitDiscountAmount": 10,
            "unitDiscountPercentage": 10,
            "unitName": "PIECE"
        }
    ],
    "creditNoteNumber": "PRES1000",
    "currency": "EUR",
    "paymentStatus": "PENDING",
    "paymentTermId": "21",
    "reference": "RCXF197253F",
    "status": "DRAFT",
    "taxRule": "NET",
    "totalDiscountAmount": 10,
    "totalDiscountPercentage": 10,
    "totalGrossAmount": 109,
    "totalNetAmount": 100,
    "totalTaxAmount": 19
}
headers = {
    "X-API-KEY": "<x-api-key>",
    "X-ACCOUNT-KEY": "<x-account-key>",
    "Content-Type": "application/json"
}

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

print(response.text)
const options = {
  method: 'POST',
  headers: {
    'X-API-KEY': '<x-api-key>',
    'X-ACCOUNT-KEY': '<x-account-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    addresses: [
      {
        addressLine1: 'Main street 45',
        addressLine2: '2nd floor',
        city: 'Berlin',
        countryCode: 'DE',
        postalCode: '10243',
        type: 'BILLING'
      }
    ],
    contactId: 'eaa28f49-6028-4b6e-bb12-d8f6278073fc',
    creditNoteDate: '2025-01-01T00:00:00Z',
    creditNoteLines: [
      {
        id: '9fc4f3a2-5b8e-4d1b-8a0c-9f6e7d2f3e4b',
        description: 'SEOUL Guest Chair, red',
        itemId: '4271',
        itemName: 'RED CHAIR',
        quantity: 1,
        taxCode: 'TAX19',
        taxRatePercentage: 19,
        totalDiscountAmount: 10,
        totalDiscountPercentage: 10,
        totalGrossAmount: 109,
        totalNetAmount: 100,
        totalTaxAmount: 19,
        unitAmount: 100,
        unitDiscountAmount: 10,
        unitDiscountPercentage: 10,
        unitName: 'PIECE'
      }
    ],
    creditNoteNumber: 'PRES1000',
    currency: 'EUR',
    paymentStatus: 'PENDING',
    paymentTermId: '21',
    reference: 'RCXF197253F',
    status: 'DRAFT',
    taxRule: 'NET',
    totalDiscountAmount: 10,
    totalDiscountPercentage: 10,
    totalGrossAmount: 109,
    totalNetAmount: 100,
    totalTaxAmount: 19
  })
};

fetch('https://api.maesn.dev/accounting/creditNotes', 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.maesn.dev/accounting/creditNotes",
  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([
    'addresses' => [
        [
                'addressLine1' => 'Main street 45',
                'addressLine2' => '2nd floor',
                'city' => 'Berlin',
                'countryCode' => 'DE',
                'postalCode' => '10243',
                'type' => 'BILLING'
        ]
    ],
    'contactId' => 'eaa28f49-6028-4b6e-bb12-d8f6278073fc',
    'creditNoteDate' => '2025-01-01T00:00:00Z',
    'creditNoteLines' => [
        [
                'id' => '9fc4f3a2-5b8e-4d1b-8a0c-9f6e7d2f3e4b',
                'description' => 'SEOUL Guest Chair, red',
                'itemId' => '4271',
                'itemName' => 'RED CHAIR',
                'quantity' => 1,
                'taxCode' => 'TAX19',
                'taxRatePercentage' => 19,
                'totalDiscountAmount' => 10,
                'totalDiscountPercentage' => 10,
                'totalGrossAmount' => 109,
                'totalNetAmount' => 100,
                'totalTaxAmount' => 19,
                'unitAmount' => 100,
                'unitDiscountAmount' => 10,
                'unitDiscountPercentage' => 10,
                'unitName' => 'PIECE'
        ]
    ],
    'creditNoteNumber' => 'PRES1000',
    'currency' => 'EUR',
    'paymentStatus' => 'PENDING',
    'paymentTermId' => '21',
    'reference' => 'RCXF197253F',
    'status' => 'DRAFT',
    'taxRule' => 'NET',
    'totalDiscountAmount' => 10,
    'totalDiscountPercentage' => 10,
    'totalGrossAmount' => 109,
    'totalNetAmount' => 100,
    'totalTaxAmount' => 19
  ]),
  CURLOPT_HTTPHEADER => [
    "Content-Type: application/json",
    "X-ACCOUNT-KEY: <x-account-key>",
    "X-API-KEY: <x-api-key>"
  ],
]);

$response = curl_exec($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.maesn.dev/accounting/creditNotes"

	payload := strings.NewReader("{\n  \"addresses\": [\n    {\n      \"addressLine1\": \"Main street 45\",\n      \"addressLine2\": \"2nd floor\",\n      \"city\": \"Berlin\",\n      \"countryCode\": \"DE\",\n      \"postalCode\": \"10243\",\n      \"type\": \"BILLING\"\n    }\n  ],\n  \"contactId\": \"eaa28f49-6028-4b6e-bb12-d8f6278073fc\",\n  \"creditNoteDate\": \"2025-01-01T00:00:00Z\",\n  \"creditNoteLines\": [\n    {\n      \"id\": \"9fc4f3a2-5b8e-4d1b-8a0c-9f6e7d2f3e4b\",\n      \"description\": \"SEOUL Guest Chair, red\",\n      \"itemId\": \"4271\",\n      \"itemName\": \"RED CHAIR\",\n      \"quantity\": 1,\n      \"taxCode\": \"TAX19\",\n      \"taxRatePercentage\": 19,\n      \"totalDiscountAmount\": 10,\n      \"totalDiscountPercentage\": 10,\n      \"totalGrossAmount\": 109,\n      \"totalNetAmount\": 100,\n      \"totalTaxAmount\": 19,\n      \"unitAmount\": 100,\n      \"unitDiscountAmount\": 10,\n      \"unitDiscountPercentage\": 10,\n      \"unitName\": \"PIECE\"\n    }\n  ],\n  \"creditNoteNumber\": \"PRES1000\",\n  \"currency\": \"EUR\",\n  \"paymentStatus\": \"PENDING\",\n  \"paymentTermId\": \"21\",\n  \"reference\": \"RCXF197253F\",\n  \"status\": \"DRAFT\",\n  \"taxRule\": \"NET\",\n  \"totalDiscountAmount\": 10,\n  \"totalDiscountPercentage\": 10,\n  \"totalGrossAmount\": 109,\n  \"totalNetAmount\": 100,\n  \"totalTaxAmount\": 19\n}")

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

	req.Header.Add("X-API-KEY", "<x-api-key>")
	req.Header.Add("X-ACCOUNT-KEY", "<x-account-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.maesn.dev/accounting/creditNotes")
  .header("X-API-KEY", "<x-api-key>")
  .header("X-ACCOUNT-KEY", "<x-account-key>")
  .header("Content-Type", "application/json")
  .body("{\n  \"addresses\": [\n    {\n      \"addressLine1\": \"Main street 45\",\n      \"addressLine2\": \"2nd floor\",\n      \"city\": \"Berlin\",\n      \"countryCode\": \"DE\",\n      \"postalCode\": \"10243\",\n      \"type\": \"BILLING\"\n    }\n  ],\n  \"contactId\": \"eaa28f49-6028-4b6e-bb12-d8f6278073fc\",\n  \"creditNoteDate\": \"2025-01-01T00:00:00Z\",\n  \"creditNoteLines\": [\n    {\n      \"id\": \"9fc4f3a2-5b8e-4d1b-8a0c-9f6e7d2f3e4b\",\n      \"description\": \"SEOUL Guest Chair, red\",\n      \"itemId\": \"4271\",\n      \"itemName\": \"RED CHAIR\",\n      \"quantity\": 1,\n      \"taxCode\": \"TAX19\",\n      \"taxRatePercentage\": 19,\n      \"totalDiscountAmount\": 10,\n      \"totalDiscountPercentage\": 10,\n      \"totalGrossAmount\": 109,\n      \"totalNetAmount\": 100,\n      \"totalTaxAmount\": 19,\n      \"unitAmount\": 100,\n      \"unitDiscountAmount\": 10,\n      \"unitDiscountPercentage\": 10,\n      \"unitName\": \"PIECE\"\n    }\n  ],\n  \"creditNoteNumber\": \"PRES1000\",\n  \"currency\": \"EUR\",\n  \"paymentStatus\": \"PENDING\",\n  \"paymentTermId\": \"21\",\n  \"reference\": \"RCXF197253F\",\n  \"status\": \"DRAFT\",\n  \"taxRule\": \"NET\",\n  \"totalDiscountAmount\": 10,\n  \"totalDiscountPercentage\": 10,\n  \"totalGrossAmount\": 109,\n  \"totalNetAmount\": 100,\n  \"totalTaxAmount\": 19\n}")
  .asString();
require 'uri'
require 'net/http'

url = URI("https://api.maesn.dev/accounting/creditNotes")

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

request = Net::HTTP::Post.new(url)
request["X-API-KEY"] = '<x-api-key>'
request["X-ACCOUNT-KEY"] = '<x-account-key>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"addresses\": [\n    {\n      \"addressLine1\": \"Main street 45\",\n      \"addressLine2\": \"2nd floor\",\n      \"city\": \"Berlin\",\n      \"countryCode\": \"DE\",\n      \"postalCode\": \"10243\",\n      \"type\": \"BILLING\"\n    }\n  ],\n  \"contactId\": \"eaa28f49-6028-4b6e-bb12-d8f6278073fc\",\n  \"creditNoteDate\": \"2025-01-01T00:00:00Z\",\n  \"creditNoteLines\": [\n    {\n      \"id\": \"9fc4f3a2-5b8e-4d1b-8a0c-9f6e7d2f3e4b\",\n      \"description\": \"SEOUL Guest Chair, red\",\n      \"itemId\": \"4271\",\n      \"itemName\": \"RED CHAIR\",\n      \"quantity\": 1,\n      \"taxCode\": \"TAX19\",\n      \"taxRatePercentage\": 19,\n      \"totalDiscountAmount\": 10,\n      \"totalDiscountPercentage\": 10,\n      \"totalGrossAmount\": 109,\n      \"totalNetAmount\": 100,\n      \"totalTaxAmount\": 19,\n      \"unitAmount\": 100,\n      \"unitDiscountAmount\": 10,\n      \"unitDiscountPercentage\": 10,\n      \"unitName\": \"PIECE\"\n    }\n  ],\n  \"creditNoteNumber\": \"PRES1000\",\n  \"currency\": \"EUR\",\n  \"paymentStatus\": \"PENDING\",\n  \"paymentTermId\": \"21\",\n  \"reference\": \"RCXF197253F\",\n  \"status\": \"DRAFT\",\n  \"taxRule\": \"NET\",\n  \"totalDiscountAmount\": 10,\n  \"totalDiscountPercentage\": 10,\n  \"totalGrossAmount\": 109,\n  \"totalNetAmount\": 100,\n  \"totalTaxAmount\": 19\n}"

response = http.request(request)
puts response.read_body
{
  "meta": {
    "warnings": [
      "Field not used by target system"
    ],
    "pagination": {
      "total": 125,
      "perPage": 50,
      "currentPage": 1,
      "totalPages": 3
    }
  },
  "data": {
    "id": "987a2b3c-4d5e-6f7g-8h9i-0j1k2l3m4n5o",
    "addresses": [
      {
        "addressLine1": "Main street 45",
        "addressLine2": "2nd floor",
        "city": "Berlin",
        "countryCode": "DE",
        "postalCode": "10243",
        "type": "BILLING"
      }
    ],
    "contactId": "eaa28f49-6028-4b6e-bb12-d8f6278073fc",
    "createdDate": "2025-01-01T00:00:00Z",
    "creditNoteDate": "2025-01-01T00:00:00Z",
    "creditNoteLines": [
      {
        "id": "9fc4f3a2-5b8e-4d1b-8a0c-9f6e7d2f3e4b",
        "createdDate": "2025-01-01T00:00:00Z",
        "description": "SEOUL Guest Chair, red",
        "itemId": "4271",
        "itemName": "RED CHAIR",
        "quantity": 1,
        "taxCode": "TAX19",
        "taxRatePercentage": 19,
        "totalDiscountAmount": 10,
        "totalDiscountPercentage": 10,
        "totalGrossAmount": 109,
        "totalNetAmount": 100,
        "totalTaxAmount": 19,
        "type": "SERVICE_ITEM",
        "unitAmount": 100,
        "unitDiscountAmount": 10,
        "unitDiscountPercentage": 10,
        "unitName": "PIECE",
        "updatedDate": "2025-01-01T00:00:00Z"
      }
    ],
    "creditNoteNumber": "PRES1000",
    "currency": "EUR",
    "paymentStatus": "PENDING",
    "paymentTermId": "21",
    "reference": "RCXF197253F",
    "status": "DRAFT",
    "taxRule": "NET",
    "totalDiscountAmount": 10,
    "totalDiscountPercentage": 10,
    "totalGrossAmount": 109,
    "totalNetAmount": 100,
    "totalTaxAmount": 19,
    "updatedDate": "2025-01-01T00:00:00Z"
  }
}

​
Field support per integration

Supported request parameters:
​
contactId
string
required
​
creditNoteDate
string
required
ISO-8601 date format, e.g., 2024-01-01T00:00:00Z
​
creditNoteLines
LineItem[]
required
​
currency
enum
required
Available options (3-letter ISO 4217): EUR
​
taxRule
enum
required
Determines whether unitAmount is net or gross. For NET, TAXFREE, and most options, unitAmount is net. For GROSS, unitAmount is gross.Available options: NET, TAXFREE, INTRACOMMUNITY_GOODS, INTRACOMMUNITY_SERVICE, EXPORT_SERVICE, EXPORT_GOODS, GROSS, CONSTRUCTION_SERVICE
Supported request parameters:
​
contactId
string
required
​
creditNoteNumber
string
required
​
creditNoteLines
LineItem[]
required
​
creditNoteDate
string
ISO-8601 date format, e.g., 2024-01-01T00:00:00Z
​
reference
string
​
paymentTermId
string
Number of days for payment term (0–999), e.g., "30" for 30 days.

Headers

​
X-API-KEY
string
required

API key

​
X-ACCOUNT-KEY
string
required

Account key

Query Parameters

​
companyId
string
​
environmentName
string

Body

application/json
​
addresses
object[]
​
contactId
string
Example:

"eaa28f49-6028-4b6e-bb12-d8f6278073fc"

​
creditNoteDate
string
Example:

"2025-01-01T00:00:00Z"

​
creditNoteLines
object[]
​
creditNoteNumber
string
Example:

"PRES1000"

​
currency
string
Example:

"EUR"

​
paymentStatus
enum<string>
Available options:
NO_OPEN_ITEM,
PENDING,
PAID,
PARTLY_PAID,
CANCELED,
PARTIAL_CANCELLATION,
BAD_DEBT,
DEBITED,
CREDIT_NOTE_CLEARED,
UNKNOWN
Example:

"PENDING"

​
paymentTermId
string
Example:

"21"

​
reference
string
Example:

"RCXF197253F"

​
status
enum<string>
Available options:
DRAFT,
CORRECTIVE,
SUBMITTED,
DOCUMENT_CREATED,
OPEN,
PARTIALLY_PAID,
PAID,
PARTIALLY_OVERDUE,
OVERDUE,
VOIDED
Example:

"DRAFT"

​
taxRule
enum<string>
Available options:
NET,
TAXFREE,
INTRACOMMUNITY_GOODS,
INTRACOMMUNITY_SERVICE,
EXPORT_SERVICE,
EXPORT_GOODS,
REVERSE_CHARGE,
GROSS,
CONSTRUCTION_SERVICE,
PHOTOVOLTAIC_EQUIPMENT,
SMALL_BUSINESS_EXEMPTION,
NON_DOMESTIC_SERVICE,
OSS_GOODS,
OSS_ELECTRONIC_SERVICES,
OSS_SERVICES
Example:

"NET"

​
totalDiscountAmount
number
Example:

10

​
totalDiscountPercentage
number
Example:

10

​
totalGrossAmount
number
Example:

109

​
totalNetAmount
number
Example:

100

​
totalTaxAmount
number
Example:

19

Response

201 - application/json
​
meta
object
​
data
object
Last modified on July 9, 2026