How To Create Adobe Commerce B2B Customer Company Account Programmatically

The following below code need to put in your custom module controlller

Here We are considering customer account has been already created in Adobe Commerce B2B & it entity_id=25, that is using here as super_user_id=25 & email = userwithoutcompany@gmail.com

<?php
/*
 * John_Customercompanycreation

 * @category   Adobe Commerce B2B Customer Company Account Creation
 * @package    Customerregister Form
 * @copyright  Copyright (c) 2023 - Mage2DB.com
 * @Email      johndusa1021@gmail.com
 * @version    1.0.0
 */
namespace John\Customercreation\Controller\Index;

use Magento\Backend\App\Action\Context;
use Magento\Framework\Controller\ResultFactory;
use Magento\Company\Api\CompanyRepositoryInterface;
use Magento\Company\Api\Data\CompanyInterface;
use Magento\Framework\Api\DataObjectHelper;

class Index extends \Magento\Framework\App\Action\Action
{
    //protected $_modelDataFactory;

    /**
     * @var \Magento\Framework\App\Cache\TypeListInterface
     */
    protected $_cacheTypeList;

    /**
     * @var \Magento\Framework\App\Cache\StateInterface
     */
    protected $_cacheState;

    /**
     * @var \Magento\Framework\App\Cache\Frontend\Pool
     */
    protected $_cacheFrontendPool;

    /**
     * @var \Magento\Framework\View\Result\PageFactory
     */
    protected $resultPageFactory;

    /**
     * @var \Magento\Company\Api\CompanyRepositoryInterface
     */

    protected $companyRepository;

    /**
     * @var \Magento\Company\Api\Data\CompanyInterface
     */

    protected $companyInterface;

    /**
     * @var \Magento\Framework\Api\DataObjectHelper
     */

    protected $objectHelper;

    /**
     * @param Action\Context $context
     * @param \Magento\Framework\App\Cache\TypeListInterface $cacheTypeList
     * @param \Magento\Framework\App\Cache\StateInterface $cacheState
     * @param \Magento\Framework\App\Cache\Frontend\Pool $cacheFrontendPool
     * @param \Magento\Framework\View\Result\PageFactory $resultPageFactory
     * @param \Magento\Company\Api\CompanyRepositoryInterface $companyRepository
     * @param \Magento\Company\Api\Data\CompanyInterface $companyInterface
     * @param \Magento\Framework\Api\DataObjectHelper $objectHelper
     */

    public function __construct(
        \Magento\Framework\App\Action\Context $context,
        \Magento\Framework\App\Cache\TypeListInterface $cacheTypeList,
        \Magento\Framework\App\Cache\StateInterface $cacheState,
        \Magento\Framework\App\Cache\Frontend\Pool $cacheFrontendPool,
        \Magento\Framework\Message\ManagerInterface $messageManager,
        \Magento\Framework\View\Result\PageFactory $resultPageFactory,
        \Magento\Company\Api\CompanyRepositoryInterface $companyRepository,
        \Magento\Company\Api\Data\CompanyInterface $companyInterface,
        \Magento\Framework\Api\DataObjectHelper $objectHelper
    ) {
        parent::__construct($context);
        $this->_cacheTypeList = $cacheTypeList;
        $this->_cacheState = $cacheState;
        $this->_cacheFrontendPool = $cacheFrontendPool;
        $this->resultPageFactory = $resultPageFactory;
        $this->_messageManager = $messageManager;
        $this->companyRepository = $companyRepository;
        $this->companyInterface = $companyInterface;
        $this->objectHelper = $objectHelper;
    }

    /**
     * Flush cache storage
     *
     */
    public function execute()
    {
        $companyRepo = $this->companyRepository;
        $companyObj = $this->companyInterface;
        $dataObj = $this->objectHelper;

        $company_email = "company@mage2db.com";

        $company = [
            "company_name" => "John",
            "company_email" => "$company_email",
            "street" => ["100 Big Tree Avenue"],
            "city" => "New York",
            "country_id" => "US",
            "region" => "CA",
            "region_id" => "12",
            "postcode" => "1001",
            "telephone" => "9999999999",
            "super_user_id" => 25,
            "customer_group_id" => 1,
        ];

    //Here We are considering customer account has been already created & it entity_id=25
   //It is using here as super_user_id=25 
  //Customer Registered Email userwithoutcompany@gmail.com

        $dataObj->populateWithArray(
            $companyObj,
            $company,
            \Magento\Company\Api\Data\CompanyInterface::class
        );

        try {
            // save customer company details address
            $companyRepo->save($companyObj);

            $this->_messageManager->addSuccess(
                __(
                    "Customer account with email %1 created successfully.",
                    $company_email
                )
            );
        } catch (Exception $e) {
            $this->_messageManager->addException(
                $e,
                __('We can\'t save the customer address.')
            );
        }

        $this->resultPage = $this->resultPageFactory->create();
        return $this->resultPage;
    }
}

Once customer’s company created, need to be by using his registered email

[1] – Customer Registered Email / Password = userwithoutcompany@gmail.com / what you have set

[2] – Once logged, customer can see his Registered Email = userwithoutcompany@gmail.com & role = Company Administrator

[3] – Here, we have created customer registered account by using

Email = userwithoutcompany@gmail.com

Once Customer account created by userwithoutcompany@gmail.com

We have done Customer Company Account Programmatically

Company Email = company@mage2db.com

Finally
Email = userwithoutcompany@gmail.com has Company Administrator
His Company Email=company@mage2db.com

How To Create Adobe Commerce B2B Customer Account & Company Account Programmatically