Add a new company if it not exists. To call this, you need to have the right to add contact of 090300.

import requests
import json

url = "https://api.example.com/restapi/v1/companies"
headers = {
  "Content-Type": "application/json"
}
data = {
  "name": "John Doe",
  "name2": "John Doe",
  "email": "user@example.com",
  "department": "example_string",
  "position": "example_string",
  "street": "example_string",
  "houseNumber": "example_string",
  "addition": "example_string",
  "zip": "example_string",
  "city": "New York",
  "state": "example_string",
  "country": "USA",
  "phone": {
    "id": 123,
    "type": "example_string",
    "countryCode": "USA",
    "areaCode": "example_string",
    "number": "example_string"
  },
  "fax": {
    "id": 123,
    "type": "example_string",
    "countryCode": "USA",
    "areaCode": "example_string",
    "number": "example_string"
  },
  "mobile": {
    "id": 123,
    "type": "example_string",
    "countryCode": "USA",
    "areaCode": "example_string",
    "number": "example_string"
  },
  "addressType": 42,
  "isDefaultAddress": true,
  "categoryId": 123
}

response = requests.post(url, headers=headers, json=data)
print(response.json())

const response = await fetch("https://api.example.com/restapi/v1/companies", {
  method: "POST",
  headers: {
  "Content-Type": "application/json"
},
  body: JSON.stringify({
  "name": "John Doe",
  "name2": "John Doe",
  "email": "user@example.com",
  "department": "example_string",
  "position": "example_string",
  "street": "example_string",
  "houseNumber": "example_string",
  "addition": "example_string",
  "zip": "example_string",
  "city": "New York",
  "state": "example_string",
  "country": "USA",
  "phone": {
    "id": 123,
    "type": "example_string",
    "countryCode": "USA",
    "areaCode": "example_string",
    "number": "example_string"
  },
  "fax": {
    "id": 123,
    "type": "example_string",
    "countryCode": "USA",
    "areaCode": "example_string",
    "number": "example_string"
  },
  "mobile": {
    "id": 123,
    "type": "example_string",
    "countryCode": "USA",
    "areaCode": "example_string",
    "number": "example_string"
  },
  "addressType": 42,
  "isDefaultAddress": true,
  "categoryId": 123
})
});

const data = await response.json();
console.log(data);

package main

import (
    "fmt"
    "net/http"
    "bytes"
    "encoding/json"
)

func main() {
    data := []byte(`{
  "name": "John Doe",
  "name2": "John Doe",
  "email": "user@example.com",
  "department": "example_string",
  "position": "example_string",
  "street": "example_string",
  "houseNumber": "example_string",
  "addition": "example_string",
  "zip": "example_string",
  "city": "New York",
  "state": "example_string",
  "country": "USA",
  "phone": {
    "id": 123,
    "type": "example_string",
    "countryCode": "USA",
    "areaCode": "example_string",
    "number": "example_string"
  },
  "fax": {
    "id": 123,
    "type": "example_string",
    "countryCode": "USA",
    "areaCode": "example_string",
    "number": "example_string"
  },
  "mobile": {
    "id": 123,
    "type": "example_string",
    "countryCode": "USA",
    "areaCode": "example_string",
    "number": "example_string"
  },
  "addressType": 42,
  "isDefaultAddress": true,
  "categoryId": 123
}`)

    req, err := http.NewRequest("POST", "https://api.example.com/restapi/v1/companies", bytes.NewBuffer(data))
    if err != nil {
        panic(err)
    }

    req.Header.Set("Content-Type", "application/json")

    client := &http.Client{}
    resp, err := client.Do(req)
    if err != nil {
        panic(err)
    }
    defer resp.Body.Close()

    fmt.Println("Response Status:", resp.Status)
}

require 'net/http'
require 'json'

uri = URI('https://api.example.com/restapi/v1/companies')
http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = true

request = Net::HTTP::Post.new(uri)
request['Content-Type'] = 'application/json'
request.body = '{
  "name": "John Doe",
  "name2": "John Doe",
  "email": "user@example.com",
  "department": "example_string",
  "position": "example_string",
  "street": "example_string",
  "houseNumber": "example_string",
  "addition": "example_string",
  "zip": "example_string",
  "city": "New York",
  "state": "example_string",
  "country": "USA",
  "phone": {
    "id": 123,
    "type": "example_string",
    "countryCode": "USA",
    "areaCode": "example_string",
    "number": "example_string"
  },
  "fax": {
    "id": 123,
    "type": "example_string",
    "countryCode": "USA",
    "areaCode": "example_string",
    "number": "example_string"
  },
  "mobile": {
    "id": 123,
    "type": "example_string",
    "countryCode": "USA",
    "areaCode": "example_string",
    "number": "example_string"
  },
  "addressType": 42,
  "isDefaultAddress": true,
  "categoryId": 123
}'

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

{
  "error": "Error",
  "message": "Method not allowed",
  "code": 405
}

{
  "error": "Conflict",
  "message": "The request conflicts with the current state of the resource",
  "code": 409,
  "details": "Resource already exists"
}