Integrity constraint violation: 1062 Duplicate entry 'adminhtml_customer-147' for key 'PRIMARY'

Hi, i have question about add new customer fields. I try to add two fields like this:

MyModules\CustomerMarketingFields\Setup\InstallData.php

public function install(ModuleDataSetupInterface $setup, ModuleContextInterface $context)
    {

        $installer = $setup;
        $installer->startSetup();
        $customerSetup = $this->customerSetupFactory->create(['setup' => $setup]);
        $entityTypeId = $customerSetup->getEntityTypeId(\Magento\Customer\Model\Customer::ENTITY);

        $customerSetup->addAttribute(\Magento\Customer\Model\Customer::ENTITY, "regulation",  array(
            "type"     => "int",
            "backend"  => "",
            "label"    => "Regulamin",
            "input"    => "boolean",
            "source"   => 'Magento\Eav\Model\Entity\Attribute\Source\Boolean',
            "visible"  => true,
            "required" => true,
            "default" => "",
            "frontend" => "",
            "unique"     => false,
            "note"       => ""

        ));

        $regulation   = $customerSetup->getAttribute(\Magento\Customer\Model\Customer::ENTITY, "regulation");

        $regulation = $customerSetup->getEavConfig()->getAttribute(\Magento\Customer\Model\Customer::ENTITY, 'regulation');
        $used_in_forms[]="adminhtml_customer";
        $used_in_forms[]="checkout_register";
        $used_in_forms[]="customer_account_create";
        $used_in_forms[]="customer_account_edit";
        $used_in_forms[]="adminhtml_checkout";
        $regulation->setData("used_in_forms", $used_in_forms)
            ->setData("is_used_for_customer_segment", true)
            ->setData("is_system", 0)
            ->setData("is_user_defined", 1)
            ->setData("is_visible", 1)
            ->setData("sort_order", 100);
        $regulation->save();


        $customerSetup->addAttribute(\Magento\Customer\Model\Customer::ENTITY, "process_personal_data",  array(
            "type"     => "int",
            "backend"  => "",
            "label"    => "Personal data",
            "input"    => "boolean",
            "source"   => 'Magento\Eav\Model\Entity\Attribute\Source\Boolean',
            "visible"  => true,
            "required" => true,
            "default" => "",
            "frontend" => "",
            "unique"     => false,
            "note"       => ""

        ));
        $personalData   = $customerSetup->getAttribute(\Magento\Customer\Model\Customer::ENTITY, "process_personal_data");

        $personalData = $customerSetup->getEavConfig()->getAttribute(\Magento\Customer\Model\Customer::ENTITY, 'process_personal_data');
        $used_in_forms[]="adminhtml_customer";
        $used_in_forms[]="checkout_register";
        $used_in_forms[]="customer_account_create";
        $used_in_forms[]="customer_account_edit";
        $used_in_forms[]="adminhtml_checkout";
        $personalData->setData("used_in_forms", $used_in_forms)
            ->setData("is_used_for_customer_segment", true)
            ->setData("is_system", 0)
            ->setData("is_user_defined", 1)
            ->setData("is_visible", 1)
            ->setData("sort_order", 100);
        $personalData->save();

        $installer->endSetup();
    }

After run setup:upgrade command i get error like this:

 [Zend_Db_Statement_Exception]                                                
  SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry 'adminhtml_customer-147' for key 'PRIMARY', query was: INSERT INTO `customer_form_attribute` (`form_code`,`attribute_id`) VALUES (?, ?), (?, ?), (?, ?), (?, ?), (?, ?), (?, ?), (?, ?) 

  [PDOException]                                                               
  SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry 'adminhtml_customer-147' for key 'PRIMARY'    

When I add only one field everything is ok.
What is wrong with this config?

Hi, even I am facing the same issue. Did you find any solution for this?