Session

Open data4 EndpointsPublic / Session

Get or start a new public session

GET/api/cp/public_session

Responses

200Get or start a new public sessionPublicSession

Show fields (22)

tokenstring
Token that identifies the public session.
person_first_namestring
First name of the person entered in the session.
person_last_namestring
Last name of the person entered in the session.
person_emailstring
E-mail address of the person entered in the session.
person_phonestring
Phone number of the person entered in the session.
company_namestring
Name of the company entered in the session.
company_emailstring
E-mail address of the company entered in the session.
company_phonestring
Phone number of the company entered in the session.
company_addressstring
Address of the company, as text.
company_address_street_levelstring
Street and house number of the company address.
company_address_costring
Care-of line of the company address.
company_address_citystring
City of the company address.
company_address_zipstring
Postal code of the company address.
company_address_countrystring
Country of the company address.
person_addressstring
Address of the person, as text.
person_address_street_levelstring
Street and house number of the person address.
person_address_costring
Care-of line of the person address.
person_address_citystring
City of the person address.
person_address_zipstring
Postal code of the person address.
person_address_countrystring
Country of the person address.
person_birthdaystring (date-time)
Birthday of the person entered in the session.
person_genderstring
Gender of the person entered in the session.

Request

curl --request GET \
  --url https://your-instance.iw-erp.de/api/cp/public_session

const options = {method: 'GET'};

fetch('https://your-instance.iw-erp.de/api/cp/public_session', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://your-instance.iw-erp.de/api/cp/public_session"

response = requests.get(url)

print(response.text)

<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('GET', 'https://your-instance.iw-erp.de/api/cp/public_session');

echo $response->getBody();

using System.Net.Http.Headers;
var client = new HttpClient();
var request = new HttpRequestMessage
{
  Method = HttpMethod.Get,
  RequestUri = new Uri("https://your-instance.iw-erp.de/api/cp/public_session"),
};
using (var response = await client.SendAsync(request))
{
  response.EnsureSuccessStatusCode();
  var body = await response.Content.ReadAsStringAsync();
  Console.WriteLine(body);
}

OkHttpClient client = new OkHttpClient();

Request request = new Request.Builder()
  .url("https://your-instance.iw-erp.de/api/cp/public_session")
  .get()
  .build();

Response response = client.newCall(request).execute();

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://your-instance.iw-erp.de/api/cp/public_session"

	req, _ := http.NewRequest("GET", url, nil)

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

Dart with the iw_erp_api package

import 'package:iw_erp_api/clients/public_session_controller.dart';
import 'package:iw_erp_api/logic/iw_api_state.dart';

IwApiState().host = 'your-instance.iw-erp.de';

final result = await PublicSessionController.getOrCreate();
if (result.success) {
  print(result.data);
}

Response 200 application/json

{
  "person_first_name": "Beispiel",
  "person_last_name": "Beispiel",
  "person_email": "lena.hartmann@example.org",
  "person_phone": "+49 511 123456",
  "company_name": "Beispiel",
  "company_email": "lena.hartmann@example.org",
  "company_phone": "+49 511 123456",
  "company_address_city": "Hannover",
  "company_address_zip": "30163",
  "company_address_country": "DE"
}

Update / create fields of public session

POST/api/cp/public_session

Request body application/json

dataPublicSession2
Show fields (21)
- person_first_namestring
  First name of the person entered in the session.
- person_last_namestring
  Last name of the person entered in the session.
- person_emailstring
  E-mail address of the person entered in the session.
- person_phonestring
  Phone number of the person entered in the session.
- company_namestring
  Name of the company entered in the session.
- company_emailstring
  E-mail address of the company entered in the session.
- company_phonestring
  Phone number of the company entered in the session.
- company_addressstring
  Address of the company, as text.
- company_address_street_levelstring
  Street and house number of the company address.
- company_address_costring
  Care-of line of the company address.
- company_address_citystring
  City of the company address.
- company_address_zipstring
  Postal code of the company address.
- company_address_countrystring
  Country of the company address.
- person_addressstring
  Address of the person, as text.
- person_address_street_levelstring
  Street and house number of the person address.
- person_address_costring
  Care-of line of the person address.
- person_address_citystring
  City of the person address.
- person_address_zipstring
  Postal code of the person address.
- person_address_countrystring
  Country of the person address.
- person_birthdaystring (date-time)
  Birthday of the person entered in the session.
- person_genderstring
  Gender of the person entered in the session.

Responses

200Update fields of public sessionPublicSession3

Show fields (25)

idinteger
Primary key of the public session. Internal ID.
tokenstring
Token that identifies the public session.
person_first_namestring
First name of the person entered in the session.
person_last_namestring
Last name of the person entered in the session.
person_emailstring
E-mail address of the person entered in the session.
person_phonestring
Phone number of the person entered in the session.
company_namestring
Name of the company entered in the session.
company_emailstring
E-mail address of the company entered in the session.
company_phonestring
Phone number of the company entered in the session.
company_addressstring
Address of the company, as text.
company_address_street_levelstring
Street and house number of the company address.
company_address_costring
Care-of line of the company address.
company_address_citystring
City of the company address.
company_address_zipstring
Postal code of the company address.
company_address_countrystring
Country of the company address.
person_addressstring
Address of the person, as text.
person_address_street_levelstring
Street and house number of the person address.
person_address_costring
Care-of line of the person address.
person_address_citystring
City of the person address.
person_address_zipstring
Postal code of the person address.
person_address_countrystring
Country of the person address.
person_birthdaystring (date-time)
Birthday of the person entered in the session.
person_genderstring
Gender of the person entered in the session.
createdstring (date-time)
Point in time the entity was created.
updatedstring (date-time)
Point in time the entity was last updated.

Request

curl --request POST \
  --url https://your-instance.iw-erp.de/api/cp/public_session \
  --header 'content-type: application/json' \
  --data '
{
  "data": {
    "person_first_name": "Beispiel",
    "person_last_name": "Beispiel",
    "person_email": "lena.hartmann@example.org",
    "person_phone": "+49 511 123456",
    "company_name": "Beispiel",
    "company_email": "lena.hartmann@example.org"
  }
}
'

const options = {
  method: 'POST',
  headers: {'content-type': 'application/json'},
  body: JSON.stringify({
    data: {
      person_first_name: 'Beispiel',
      person_last_name: 'Beispiel',
      person_email: 'lena.hartmann@example.org',
      person_phone: '+49 511 123456',
      company_name: 'Beispiel',
      company_email: 'lena.hartmann@example.org'
    }
  })
};

fetch('https://your-instance.iw-erp.de/api/cp/public_session', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://your-instance.iw-erp.de/api/cp/public_session"

payload = { "data": {
    "person_first_name": "Beispiel",
    "person_last_name": "Beispiel",
    "person_email": "lena.hartmann@example.org",
    "person_phone": "+49 511 123456",
    "company_name": "Beispiel",
    "company_email": "lena.hartmann@example.org"
  } }
headers = {"content-type": "application/json"}

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

print(response.text)

<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('POST', 'https://your-instance.iw-erp.de/api/cp/public_session', [
  'body' => '{"data":{"person_first_name":"Beispiel","person_last_name":"Beispiel","person_email":"lena.hartmann@example.org","person_phone":"+49 511 123456","company_name":"Beispiel","company_email":"lena.hartmann@example.org"}}',
  'headers' => [
    'content-type' => 'application/json',
  ],
]);

echo $response->getBody();

using System.Net.Http.Headers;
var client = new HttpClient();
var request = new HttpRequestMessage
{
  Method = HttpMethod.Post,
  RequestUri = new Uri("https://your-instance.iw-erp.de/api/cp/public_session"),
  Content = new StringContent("{\"data\":{\"person_first_name\":\"Beispiel\",\"person_last_name\":\"Beispiel\",\"person_email\":\"lena.hartmann@example.org\",\"person_phone\":\"+49 511 123456\",\"company_name\":\"Beispiel\",\"company_email\":\"lena.hartmann@example.org\"}}")
  {
    Headers =
    {
      ContentType = new MediaTypeHeaderValue("application/json")
    }
  }
};
using (var response = await client.SendAsync(request))
{
  response.EnsureSuccessStatusCode();
  var body = await response.Content.ReadAsStringAsync();
  Console.WriteLine(body);
}

OkHttpClient client = new OkHttpClient();

MediaType mediaType = MediaType.parse("application/json");
RequestBody body = RequestBody.create(mediaType, "{\"data\":{\"person_first_name\":\"Beispiel\",\"person_last_name\":\"Beispiel\",\"person_email\":\"lena.hartmann@example.org\",\"person_phone\":\"+49 511 123456\",\"company_name\":\"Beispiel\",\"company_email\":\"lena.hartmann@example.org\"}}");
Request request = new Request.Builder()
  .url("https://your-instance.iw-erp.de/api/cp/public_session")
  .post(body)
  .addHeader("content-type", "application/json")
  .build();

Response response = client.newCall(request).execute();

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://your-instance.iw-erp.de/api/cp/public_session"

	payload := strings.NewReader("{\"data\":{\"person_first_name\":\"Beispiel\",\"person_last_name\":\"Beispiel\",\"person_email\":\"lena.hartmann@example.org\",\"person_phone\":\"+49 511 123456\",\"company_name\":\"Beispiel\",\"company_email\":\"lena.hartmann@example.org\"}}")

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

	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))

}

Dart with the iw_erp_api package

import 'package:iw_erp_api/clients/public_session_controller.dart';
import 'package:iw_erp_api/logic/iw_api_state.dart';
import 'package:iw_erp_api/model/public_session.dart';

IwApiState().host = 'your-instance.iw-erp.de';

final result = await PublicSessionController.updateOrCreate(PublicSession.fromJson({
  "person_first_name": "Beispiel",
  "person_last_name": "Beispiel",
  "person_email": "lena.hartmann@example.org",
  "person_phone": "+49 511 123456",
  "company_name": "Beispiel",
  "company_email": "lena.hartmann@example.org"
}));
if (result.success) {
  print(result.data);
}

Response 200 application/json

{
  "id": 42,
  "person_first_name": "Beispiel",
  "person_last_name": "Beispiel",
  "person_email": "lena.hartmann@example.org",
  "person_phone": "+49 511 123456",
  "company_name": "Beispiel",
  "company_email": "lena.hartmann@example.org",
  "company_phone": "+49 511 123456",
  "company_address_city": "Hannover",
  "company_address_zip": "30163"
}

Update / create fields of public session

PUT/api/cp/public_session

Request body application/json

dataPublicSession2
Show fields (21)
- person_first_namestring
  First name of the person entered in the session.
- person_last_namestring
  Last name of the person entered in the session.
- person_emailstring
  E-mail address of the person entered in the session.
- person_phonestring
  Phone number of the person entered in the session.
- company_namestring
  Name of the company entered in the session.
- company_emailstring
  E-mail address of the company entered in the session.
- company_phonestring
  Phone number of the company entered in the session.
- company_addressstring
  Address of the company, as text.
- company_address_street_levelstring
  Street and house number of the company address.
- company_address_costring
  Care-of line of the company address.
- company_address_citystring
  City of the company address.
- company_address_zipstring
  Postal code of the company address.
- company_address_countrystring
  Country of the company address.
- person_addressstring
  Address of the person, as text.
- person_address_street_levelstring
  Street and house number of the person address.
- person_address_costring
  Care-of line of the person address.
- person_address_citystring
  City of the person address.
- person_address_zipstring
  Postal code of the person address.
- person_address_countrystring
  Country of the person address.
- person_birthdaystring (date-time)
  Birthday of the person entered in the session.
- person_genderstring
  Gender of the person entered in the session.

Responses

200Update fields of public sessionPublicSession3

Show fields (25)

idinteger
Primary key of the public session. Internal ID.
tokenstring
Token that identifies the public session.
person_first_namestring
First name of the person entered in the session.
person_last_namestring
Last name of the person entered in the session.
person_emailstring
E-mail address of the person entered in the session.
person_phonestring
Phone number of the person entered in the session.
company_namestring
Name of the company entered in the session.
company_emailstring
E-mail address of the company entered in the session.
company_phonestring
Phone number of the company entered in the session.
company_addressstring
Address of the company, as text.
company_address_street_levelstring
Street and house number of the company address.
company_address_costring
Care-of line of the company address.
company_address_citystring
City of the company address.
company_address_zipstring
Postal code of the company address.
company_address_countrystring
Country of the company address.
person_addressstring
Address of the person, as text.
person_address_street_levelstring
Street and house number of the person address.
person_address_costring
Care-of line of the person address.
person_address_citystring
City of the person address.
person_address_zipstring
Postal code of the person address.
person_address_countrystring
Country of the person address.
person_birthdaystring (date-time)
Birthday of the person entered in the session.
person_genderstring
Gender of the person entered in the session.
createdstring (date-time)
Point in time the entity was created.
updatedstring (date-time)
Point in time the entity was last updated.

Request

curl --request PUT \
  --url https://your-instance.iw-erp.de/api/cp/public_session \
  --header 'content-type: application/json' \
  --data '
{
  "data": {
    "person_first_name": "Beispiel",
    "person_last_name": "Beispiel",
    "person_email": "lena.hartmann@example.org",
    "person_phone": "+49 511 123456",
    "company_name": "Beispiel",
    "company_email": "lena.hartmann@example.org"
  }
}
'

const options = {
  method: 'PUT',
  headers: {'content-type': 'application/json'},
  body: JSON.stringify({
    data: {
      person_first_name: 'Beispiel',
      person_last_name: 'Beispiel',
      person_email: 'lena.hartmann@example.org',
      person_phone: '+49 511 123456',
      company_name: 'Beispiel',
      company_email: 'lena.hartmann@example.org'
    }
  })
};

fetch('https://your-instance.iw-erp.de/api/cp/public_session', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://your-instance.iw-erp.de/api/cp/public_session"

payload = { "data": {
    "person_first_name": "Beispiel",
    "person_last_name": "Beispiel",
    "person_email": "lena.hartmann@example.org",
    "person_phone": "+49 511 123456",
    "company_name": "Beispiel",
    "company_email": "lena.hartmann@example.org"
  } }
headers = {"content-type": "application/json"}

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

print(response.text)

<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('PUT', 'https://your-instance.iw-erp.de/api/cp/public_session', [
  'body' => '{"data":{"person_first_name":"Beispiel","person_last_name":"Beispiel","person_email":"lena.hartmann@example.org","person_phone":"+49 511 123456","company_name":"Beispiel","company_email":"lena.hartmann@example.org"}}',
  'headers' => [
    'content-type' => 'application/json',
  ],
]);

echo $response->getBody();

using System.Net.Http.Headers;
var client = new HttpClient();
var request = new HttpRequestMessage
{
  Method = HttpMethod.Put,
  RequestUri = new Uri("https://your-instance.iw-erp.de/api/cp/public_session"),
  Content = new StringContent("{\"data\":{\"person_first_name\":\"Beispiel\",\"person_last_name\":\"Beispiel\",\"person_email\":\"lena.hartmann@example.org\",\"person_phone\":\"+49 511 123456\",\"company_name\":\"Beispiel\",\"company_email\":\"lena.hartmann@example.org\"}}")
  {
    Headers =
    {
      ContentType = new MediaTypeHeaderValue("application/json")
    }
  }
};
using (var response = await client.SendAsync(request))
{
  response.EnsureSuccessStatusCode();
  var body = await response.Content.ReadAsStringAsync();
  Console.WriteLine(body);
}

OkHttpClient client = new OkHttpClient();

MediaType mediaType = MediaType.parse("application/json");
RequestBody body = RequestBody.create(mediaType, "{\"data\":{\"person_first_name\":\"Beispiel\",\"person_last_name\":\"Beispiel\",\"person_email\":\"lena.hartmann@example.org\",\"person_phone\":\"+49 511 123456\",\"company_name\":\"Beispiel\",\"company_email\":\"lena.hartmann@example.org\"}}");
Request request = new Request.Builder()
  .url("https://your-instance.iw-erp.de/api/cp/public_session")
  .put(body)
  .addHeader("content-type", "application/json")
  .build();

Response response = client.newCall(request).execute();

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://your-instance.iw-erp.de/api/cp/public_session"

	payload := strings.NewReader("{\"data\":{\"person_first_name\":\"Beispiel\",\"person_last_name\":\"Beispiel\",\"person_email\":\"lena.hartmann@example.org\",\"person_phone\":\"+49 511 123456\",\"company_name\":\"Beispiel\",\"company_email\":\"lena.hartmann@example.org\"}}")

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

	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))

}

Dart with package:http (no controller in the iw_erp_api package)

import 'dart:convert';
import 'package:http/http.dart' as http;

final response = await http.put(
  Uri.parse('https://your-instance.iw-erp.de/api/cp/public_session'),
  headers: {'content-type': 'application/json'},
  body: jsonEncode({
    "data": {
      "person_first_name": "Beispiel",
      "person_last_name": "Beispiel",
      "person_email": "lena.hartmann@example.org",
      "person_phone": "+49 511 123456",
      "company_name": "Beispiel",
      "company_email": "lena.hartmann@example.org"
    }
  }),
);
print(response.body);

Response 200 application/json

{
  "id": 42,
  "person_first_name": "Beispiel",
  "person_last_name": "Beispiel",
  "person_email": "lena.hartmann@example.org",
  "person_phone": "+49 511 123456",
  "company_name": "Beispiel",
  "company_email": "lena.hartmann@example.org",
  "company_phone": "+49 511 123456",
  "company_address_city": "Hannover",
  "company_address_zip": "30163"
}

Update / create fields of public session

PATCH/api/cp/public_session

Request body application/json

dataPublicSession2
Show fields (21)
- person_first_namestring
  First name of the person entered in the session.
- person_last_namestring
  Last name of the person entered in the session.
- person_emailstring
  E-mail address of the person entered in the session.
- person_phonestring
  Phone number of the person entered in the session.
- company_namestring
  Name of the company entered in the session.
- company_emailstring
  E-mail address of the company entered in the session.
- company_phonestring
  Phone number of the company entered in the session.
- company_addressstring
  Address of the company, as text.
- company_address_street_levelstring
  Street and house number of the company address.
- company_address_costring
  Care-of line of the company address.
- company_address_citystring
  City of the company address.
- company_address_zipstring
  Postal code of the company address.
- company_address_countrystring
  Country of the company address.
- person_addressstring
  Address of the person, as text.
- person_address_street_levelstring
  Street and house number of the person address.
- person_address_costring
  Care-of line of the person address.
- person_address_citystring
  City of the person address.
- person_address_zipstring
  Postal code of the person address.
- person_address_countrystring
  Country of the person address.
- person_birthdaystring (date-time)
  Birthday of the person entered in the session.
- person_genderstring
  Gender of the person entered in the session.

Responses

200Update fields of public sessionPublicSession3

Show fields (25)

idinteger
Primary key of the public session. Internal ID.
tokenstring
Token that identifies the public session.
person_first_namestring
First name of the person entered in the session.
person_last_namestring
Last name of the person entered in the session.
person_emailstring
E-mail address of the person entered in the session.
person_phonestring
Phone number of the person entered in the session.
company_namestring
Name of the company entered in the session.
company_emailstring
E-mail address of the company entered in the session.
company_phonestring
Phone number of the company entered in the session.
company_addressstring
Address of the company, as text.
company_address_street_levelstring
Street and house number of the company address.
company_address_costring
Care-of line of the company address.
company_address_citystring
City of the company address.
company_address_zipstring
Postal code of the company address.
company_address_countrystring
Country of the company address.
person_addressstring
Address of the person, as text.
person_address_street_levelstring
Street and house number of the person address.
person_address_costring
Care-of line of the person address.
person_address_citystring
City of the person address.
person_address_zipstring
Postal code of the person address.
person_address_countrystring
Country of the person address.
person_birthdaystring (date-time)
Birthday of the person entered in the session.
person_genderstring
Gender of the person entered in the session.
createdstring (date-time)
Point in time the entity was created.
updatedstring (date-time)
Point in time the entity was last updated.

Request

curl --request PATCH \
  --url https://your-instance.iw-erp.de/api/cp/public_session \
  --header 'content-type: application/json' \
  --data '
{
  "data": {
    "person_first_name": "Beispiel",
    "person_last_name": "Beispiel",
    "person_email": "lena.hartmann@example.org",
    "person_phone": "+49 511 123456",
    "company_name": "Beispiel",
    "company_email": "lena.hartmann@example.org"
  }
}
'

const options = {
  method: 'PATCH',
  headers: {'content-type': 'application/json'},
  body: JSON.stringify({
    data: {
      person_first_name: 'Beispiel',
      person_last_name: 'Beispiel',
      person_email: 'lena.hartmann@example.org',
      person_phone: '+49 511 123456',
      company_name: 'Beispiel',
      company_email: 'lena.hartmann@example.org'
    }
  })
};

fetch('https://your-instance.iw-erp.de/api/cp/public_session', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://your-instance.iw-erp.de/api/cp/public_session"

payload = { "data": {
    "person_first_name": "Beispiel",
    "person_last_name": "Beispiel",
    "person_email": "lena.hartmann@example.org",
    "person_phone": "+49 511 123456",
    "company_name": "Beispiel",
    "company_email": "lena.hartmann@example.org"
  } }
headers = {"content-type": "application/json"}

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

print(response.text)

<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('PATCH', 'https://your-instance.iw-erp.de/api/cp/public_session', [
  'body' => '{"data":{"person_first_name":"Beispiel","person_last_name":"Beispiel","person_email":"lena.hartmann@example.org","person_phone":"+49 511 123456","company_name":"Beispiel","company_email":"lena.hartmann@example.org"}}',
  'headers' => [
    'content-type' => 'application/json',
  ],
]);

echo $response->getBody();

using System.Net.Http.Headers;
var client = new HttpClient();
var request = new HttpRequestMessage
{
  Method = HttpMethod.Patch,
  RequestUri = new Uri("https://your-instance.iw-erp.de/api/cp/public_session"),
  Content = new StringContent("{\"data\":{\"person_first_name\":\"Beispiel\",\"person_last_name\":\"Beispiel\",\"person_email\":\"lena.hartmann@example.org\",\"person_phone\":\"+49 511 123456\",\"company_name\":\"Beispiel\",\"company_email\":\"lena.hartmann@example.org\"}}")
  {
    Headers =
    {
      ContentType = new MediaTypeHeaderValue("application/json")
    }
  }
};
using (var response = await client.SendAsync(request))
{
  response.EnsureSuccessStatusCode();
  var body = await response.Content.ReadAsStringAsync();
  Console.WriteLine(body);
}

OkHttpClient client = new OkHttpClient();

MediaType mediaType = MediaType.parse("application/json");
RequestBody body = RequestBody.create(mediaType, "{\"data\":{\"person_first_name\":\"Beispiel\",\"person_last_name\":\"Beispiel\",\"person_email\":\"lena.hartmann@example.org\",\"person_phone\":\"+49 511 123456\",\"company_name\":\"Beispiel\",\"company_email\":\"lena.hartmann@example.org\"}}");
Request request = new Request.Builder()
  .url("https://your-instance.iw-erp.de/api/cp/public_session")
  .patch(body)
  .addHeader("content-type", "application/json")
  .build();

Response response = client.newCall(request).execute();

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://your-instance.iw-erp.de/api/cp/public_session"

	payload := strings.NewReader("{\"data\":{\"person_first_name\":\"Beispiel\",\"person_last_name\":\"Beispiel\",\"person_email\":\"lena.hartmann@example.org\",\"person_phone\":\"+49 511 123456\",\"company_name\":\"Beispiel\",\"company_email\":\"lena.hartmann@example.org\"}}")

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

	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))

}

Dart with package:http (no controller in the iw_erp_api package)

import 'dart:convert';
import 'package:http/http.dart' as http;

final response = await http.patch(
  Uri.parse('https://your-instance.iw-erp.de/api/cp/public_session'),
  headers: {'content-type': 'application/json'},
  body: jsonEncode({
    "data": {
      "person_first_name": "Beispiel",
      "person_last_name": "Beispiel",
      "person_email": "lena.hartmann@example.org",
      "person_phone": "+49 511 123456",
      "company_name": "Beispiel",
      "company_email": "lena.hartmann@example.org"
    }
  }),
);
print(response.body);

Response 200 application/json

{
  "id": 42,
  "person_first_name": "Beispiel",
  "person_last_name": "Beispiel",
  "person_email": "lena.hartmann@example.org",
  "person_phone": "+49 511 123456",
  "company_name": "Beispiel",
  "company_email": "lena.hartmann@example.org",
  "company_phone": "+49 511 123456",
  "company_address_city": "Hannover",
  "company_address_zip": "30163"
}