Add Product Property or Variation catalog.productProperty.add

curl -X POST \
  -H "Content-Type: application/json" \
  -H "Accept: application/json" \
  -d '{"fields":{"iblockId":19,"name":"Category","code":"CATEGORY","propertyType":"S","userType":"directory","multiple":"N","isRequired":"N","active":"Y","sort":100,"userTypeSettings":{"tableName":"b_hlbd_categories"}},"auth":"**put_access_token_here**"}' \
  https://**put_your_bitrix24_address**/rest/catalog.productProperty.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, ISODate } from '@bitrix24/b24jssdk'

declare const $b24: B24Frame

// Shape of the payload returned in result (match the "response handling" section of the page)
type ProductPropertyResult = {
  productProperty: {
    active: string,
    code: string | null,
    colCount: number,
    defaultValue: string | null,
    fileType: string | null,
    filtrable: string,
    hint: string | null,
    iblockId: number,
    id: number,
    isRequired: string,
    linkIblockId: number | null,
    listType: string,
    multiple: string,
    multipleCnt: number | null,
    name: string,
    propertyType: string,
    rowCount: number,
    searchable: string,
    sort: number,
    timestampX: ISODate,
    userType: string | null,
    userTypeSettings: Record<string, unknown> | null,
    withDescription: string | null,
    xmlId: string | null,
  },
}

try {
  const response = await $b24.actions.v2.call.make<ProductPropertyResult>({
    method: 'catalog.productProperty.add',
    params: {
      fields: {
        iblockId: 19,
        name: 'Category',
        code: 'CATEGORY',
        propertyType: 'S',
        userType: 'directory',
        multiple: 'N',
        isRequired: 'N',
        active: 'Y',
        sort: 100,
        userTypeSettings: {
          tableName: 'b_hlbd_categories', // existing catalog in Bitrix24
        },
      },
    },
    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(result.productProperty.id, result.productProperty.name)
  }
} 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 addProductProperty() {
    try {
      // Initialize the SDK inside a Bitrix24 frame
      const $b24 = await B24Js.initializeB24Frame()

      const response = await $b24.actions.v2.call.make({
        method: 'catalog.productProperty.add',
        params: {
          fields: {
            iblockId: 19,
            name: 'Category',
            code: 'CATEGORY',
            propertyType: 'S',
            userType: 'directory',
            multiple: 'N',
            isRequired: 'N',
            active: 'Y',
            sort: 100,
            userTypeSettings: {
              tableName: 'b_hlbd_categories', // existing catalog in Bitrix24
            },
          },
        },
        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(result.productProperty.id, result.productProperty.name)
    } catch (error) {
      // Thrown on transport or SDK failures (AjaxError, SdkError, etc.)
      console.error(error)
    }
  }

  document.addEventListener('DOMContentLoaded', addProductProperty)
</script>

try {
    $response = $b24Service
        ->core
        ->call(
            'catalog.productProperty.add',
            [
                'fields' => [
                    'iblockId' => 19,
                    'name' => 'Category',
                    'code' => 'CATEGORY',
                    'propertyType' => 'S',
                    'userType' => 'directory',
                    'multiple' => 'N',
                    'isRequired' => 'N',
                    'active' => 'Y',
                    'sort' => 100,
                    'userTypeSettings' => [
                        'tableName' => 'b_hlbd_categories', // existing directory in Bitrix24
                    ],
                ],
            ]
        );

    print_r($response->getResponseData()->getResult());
} catch (\Throwable $exception) {
    echo $exception->getMessage();
}

BX24.callMethod(
    'catalog.productProperty.add',
    {
        fields: {
            iblockId: 19,
            name: 'Category',
            code: 'CATEGORY',
            propertyType: 'S',
            userType: 'directory',
            multiple: 'N',
            isRequired: 'N',
            active: 'Y',
            sort: 100,
            userTypeSettings: {
                tableName: 'b_hlbd_categories', // existing directory in Bitrix24
            }
        }
    },
    function(result) {
        if (result.error()) {
            console.error(result.error());
        } else {
            console.log(result.data());
        }
    }
);

require_once('crest.php');

$result = CRest::call(
    'catalog.productProperty.add',
    [
        'fields' => [
            'iblockId' => 19,
            'name' => 'Category',
            'code' => 'CATEGORY',
            'propertyType' => 'S',
            'userType' => 'directory',
            'multiple' => 'N',
            'isRequired' => 'N',
            'active' => 'Y',
            'sort' => 100,
            'userTypeSettings' => [
                'tableName' => 'b_hlbd_categories', // existing directory in Bitrix24
            ],
        ]
    ]
);

print_r($result);

// client and ctx are already created — see the Go SDK section
res, err := client.Core().Call(ctx, "catalog.productProperty.add", b24.Params{
	"fields": b24.Params{
		"iblockId":     19,
		"name":         "Category",
		"code":         "CATEGORY",
		"propertyType": "S",
		"userType":     "directory",
		"multiple":     "N",
		"isRequired":   "N",
		"active":       "Y",
		"sort":         100,
		"userTypeSettings": b24.Params{
			"tableName": "b_hlbd_categories",
		},
	},
})
if err != nil {
	return fmt.Errorf("catalog.productProperty.add: %w", err)
}

// The method wraps the response in an object with the "productProperty" key.
raw, ok := b24.Unwrap(res.Result, "productProperty")
if !ok {
	return fmt.Errorf("no productProperty key in the response")
}

var item struct {
	Active    string `json:"active"`
	Code      string `json:"code"`
	ColCount  int    `json:"colCount"`
	Filtrable string `json:"filtrable"`
	IblockID  b24.ID `json:"iblockId"`
	ID        b24.ID `json:"id"`
}
if err := json.Unmarshal(raw, &item); err != nil {
	return fmt.Errorf("parse response: %w", err)
}
fmt.Println(item.Active, item.Code)