Add Custom Field task.item.userfield.add

curl -X POST \
        -H "Content-Type: application/json" \
        -H "Accept: application/json" \
        -d '{
          "PARAMS": {
            "USER_TYPE_ID": "string",
            "FIELD_NAME": "UF_TASK_CLIENT_REQUEST",
            "XML_ID": "UF_TASK_CLIENT_REQUEST",
            "EDIT_FORM_LABEL": {
              "de": "Kundenanfrage",
              "en": "Client request"
            },
            "LABEL": "Client request",
            "SORT": 220,
            "MULTIPLE": "N",
            "MANDATORY": "Y",
            "SETTINGS": {
              "DEFAULT_VALUE": "Clarify the goal and expected result",
              "ROWS": 10
            }
          },
          "auth": "**put_access_token_here**"
        }' \
        https://**put_your_bitrix24_address**/rest/task.item.userfield.add
        

// This snippet is an ES module: top-level await requires type="module" or a bundler.
        // $b24 is an already-initialized SDK instance (see the SDK "Get started" guide).
        import { Text } from '@bitrix24/b24jssdk'
        import type { B24Frame } from '@bitrix24/b24jssdk'
        
        declare const $b24: B24Frame
        
        try {
          const response = await $b24.actions.v2.call.make<number>({
            method: 'task.item.userfield.add',
            params: {
              PARAMS: {
                USER_TYPE_ID: 'string',
                FIELD_NAME: 'UF_TASK_CLIENT_REQUEST',
                XML_ID: 'UF_TASK_CLIENT_REQUEST',
                EDIT_FORM_LABEL: {
                  de: 'Kundenanfrage',
                  en: 'Client request',
                },
                LABEL: 'Client request',
                SORT: 220,
                MULTIPLE: 'N',
                MANDATORY: 'Y',
                SETTINGS: {
                  DEFAULT_VALUE: 'Clarify the goal and expected result',
                  ROWS: 10,
                },
              },
            },
            requestId: Text.getUuidRfc4122()
          })
        
          // The payload is available only on a successful response
          if (!response.isSuccess) {
            console.error(response.getErrorMessages().join('; '))
          } else {
            const result = response.getData()!.result
            console.info('Created user field ID:', result)
          }
        } catch (error) {
          // Thrown on transport or SDK failures (AjaxError, SdkError, etc.)
          console.error(error)
        }
        

<!-- Load the SDK (UMD build); it is exposed as the global B24Js -->
        <script src="https://unpkg.com/@bitrix24/b24jssdk@1/dist/umd/index.min.js"></script>
        <script>
          async function addTaskUserField() {
            try {
              // Initialize the SDK inside a Bitrix24 frame
              const $b24 = await B24Js.initializeB24Frame()
        
              const response = await $b24.actions.v2.call.make({
                method: 'task.item.userfield.add',
                params: {
                  PARAMS: {
                    USER_TYPE_ID: 'string',
                    FIELD_NAME: 'UF_TASK_CLIENT_REQUEST',
                    XML_ID: 'UF_TASK_CLIENT_REQUEST',
                    EDIT_FORM_LABEL: {
                      de: 'Kundenanfrage',
                      en: 'Client request',
                    },
                    LABEL: 'Client request',
                    SORT: 220,
                    MULTIPLE: 'N',
                    MANDATORY: 'Y',
                    SETTINGS: {
                      DEFAULT_VALUE: 'Clarify the goal and expected result',
                      ROWS: 10,
                    },
                  },
                },
                requestId: B24Js.Text.getUuidRfc4122()
              })
        
              // The payload is available only on a successful response
              if (!response.isSuccess) {
                console.error(response.getErrorMessages().join('; '))
                return
              }
        
              const result = response.getData().result
              console.info('Created user field ID:', result)
            } catch (error) {
              // Thrown on transport or SDK failures (AjaxError, SdkError, etc.)
              console.error(error)
            }
          }
        
          document.addEventListener('DOMContentLoaded', addTaskUserField)
        </script>
        

try {
            $response = $b24Service
                ->core
                ->call(
                    'task.item.userfield.add',
                    [
                        'PARAMS' => [
                            'USER_TYPE_ID' => 'string',
                            'FIELD_NAME' => 'UF_TASK_CLIENT_REQUEST',
                            'XML_ID' => 'UF_TASK_CLIENT_REQUEST',
                            'EDIT_FORM_LABEL' => [
                                'de' => 'Kundenanfrage',
                                'en' => 'Client request'
                            ],
                            'LABEL' => 'Client request',
                            'SORT' => 220,
                            'MULTIPLE' => 'N',
                            'MANDATORY' => 'Y',
                            'SETTINGS' => [
                                'DEFAULT_VALUE' => 'Clarify the goal and expected result',
                                'ROWS' => 10
                            ]
                        ]
                    ]
                );
        
            $result = $response
                ->getResponseData()
                ->getResult();
        
            print_r($result);
        } catch (Throwable $e) {
            echo $e->getMessage();
        }
        

BX24.callMethod(
            'task.item.userfield.add',
            {
                PARAMS: {
                    USER_TYPE_ID: 'string',
                    FIELD_NAME: 'UF_TASK_CLIENT_REQUEST',
                    XML_ID: 'UF_TASK_CLIENT_REQUEST',
                    LABEL: 'Client request',
                    EDIT_FORM_LABEL: {
                        de: 'Kundenanfrage',
                        en: 'Client request'
                    },
                    SORT: 220,
                    MULTIPLE: 'N',
                    MANDATORY: 'Y',
                    SETTINGS: {
                        DEFAULT_VALUE: 'Clarify the goal and expected result',
                        ROWS: 10
                    }
                }
            },
            function(result)
            {
                if (result.error())
                {
                    console.error(result.error());
                }
                else
                {
                    console.log(result.data());
                }
            }
        );
        

require_once('crest.php');
        
        $result = CRest::call(
            'task.item.userfield.add',
            [
                'PARAMS' => [
                    'USER_TYPE_ID' => 'string',
                    'FIELD_NAME' => 'UF_TASK_CLIENT_REQUEST',
                    'XML_ID' => 'UF_TASK_CLIENT_REQUEST',
                    'EDIT_FORM_LABEL' => [
                        'de' => 'Kundenanfrage',
                        'en' => 'Client request'
                    ],
                    'LABEL' => 'Client request',
                    'SORT' => 220,
                    'MULTIPLE' => 'N',
                    'MANDATORY' => 'Y',
                    'SETTINGS' => [
                        'DEFAULT_VALUE' => 'Clarify the goal and expected result',
                        'ROWS' => 10
                    ]
                ]
            ]
        );
        
        print_r($result);