Add a Section to the Catalog catalog.section.add

-X POST \
        -H "Content-Type: application/json" \
        -H "Accept: application/json" \
        -d '{
            "fields": {
                "name": "Children's Toys",
                "iblockId": 14,
                "iblockSectionId": 13,
                "sort": "100",
                "active": "Y",
                "code": "toys",
                "xmlId": "myXmlId",
                "description": "Products for children - toys",
                "descriptionType": "text"
            },
            "auth": "**put_access_token_here**"
        }' \
        https://**put_your_bitrix24_address**/rest/catalog.section.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
        
        // Shape of the payload returned in result (match the "response handling" section of the page)
        type SectionAddResult = {
          section: {
            active: string
            code: string
            description: string
            descriptionType: string
            iblockId: number
            iblockSectionId: number
            id: number
            name: string
            sort: number
            xmlId: string
          }
        }
        
        try {
          const response = await $b24.actions.v2.call.make<SectionAddResult>({
            method: 'catalog.section.add',
            params: {
              fields: {
                name: "Kids Toys",
                iblockId: 14,
                iblockSectionId: 13,
                sort: '100',
                active: 'Y',
                code: 'toys',
                xmlId: 'myXmlId',
                description: "Products for children - toys",
                descriptionType: "text",
              },
            },
            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.section.id, result.section.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 addCatalogSection() {
            try {
              // Initialize the SDK inside a Bitrix24 frame
              const $b24 = await B24Js.initializeB24Frame()
        
              const response = await $b24.actions.v2.call.make({
                method: 'catalog.section.add',
                params: {
                  fields: {
                    name: "Kids Toys",
                    iblockId: 14,
                    iblockSectionId: 13,
                    sort: '100',
                    active: 'Y',
                    code: 'toys',
                    xmlId: 'myXmlId',
                    description: "Products for children - toys",
                    descriptionType: "text",
                  },
                },
                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.section.id, result.section.name)
            } catch (error) {
              // Thrown on transport or SDK failures (AjaxError, SdkError, etc.)
              console.error(error)
            }
          }
        
          document.addEventListener('DOMContentLoaded', addCatalogSection)
        </script>
        

try {
            $response = $b24Service
                ->core
                ->call(
                    'catalog.section.add',
                    [
                        'fields' => [
                            'name'            => 'Children\'s Toys',
                            'iblockId'        => 14,
                            'iblockSectionId' => 13,
                            'sort'            => '100',
                            'active'          => 'Y',
                            'code'            => 'toys',
                            'xmlId'           => 'myXmlId',
                            'description'     => "Products for children - toys",
                            'descriptionType' => "text",
                        ],
                    ]
                );
        
            $result = $response
                ->getResponseData()
                ->getResult();
        
            echo 'Success: ' . print_r($result, true);
        
        } catch (Throwable $e) {
            error_log($e->getMessage());
            echo 'Error adding catalog section: ' . $e->getMessage();
        }
        

BX24.callMethod(
            'catalog.section.add', 
            {
                fields: {
                    name: 'Children\'s Toys',
                    iblockId: 14,
                    iblockSectionId: 13,
                    sort: '100',
                    active: 'Y',
                    code: 'toys',
                    xmlId: 'myXmlId',
                    description: "Products for children - toys",
                    descriptionType: "text"
                }
            },
            function(result)
            {
                if(result.error())
                    console.error(result.error());
                else
                    console.log(result.data());
            }
        );
        

require_once('crest.php');
        
        $result = CRest::call(
            'catalog.section.add',
            [
                'fields' => [
                    'name' => 'Children\'s Toys',
                    'iblockId' => 14,
                    'iblockSectionId' => 13,
                    'sort' => '100',
                    'active' => 'Y',
                    'code' => 'toys',
                    'xmlId' => 'myXmlId',
                    'description' => 'Products for children - toys',
                    'descriptionType' => 'text'
                ]
            ]
        );
        
        echo '<PRE>';
        print_r($result);
        echo '</PRE>';