Why, when registering a user via API in Bitrix, the error “Jur. Faces?

Question

1C-Bitrix

It was necessary to complete the registration form on the Bitrix site, I wrote the code

global $USER;

    $arFields = Array(
      "EMAIL"=>$email,
      "LOGIN"=>$login,
      "ACTIVE"=>"Y",//Делаем пользователя активным
      "PASSWORD"=>$pass,
      "CONFIRM_PASSWORD"=>$pass2,
      "UF_INN_ID"=>$inn,// Добавляем пользовательское поле(они всегда начинаются с UF_)
      "UF_BU_ST"=>"N",
      "UF_F_NAME"=>"Не указано"
    );

    $id = $USER->Add($arFields);
var_dump($arFields);var_dump($id);echo $USER->LAST_ERROR;

Began to understand why $id = $USER->Add($arFields); returns false for which echo $USER->LAST_ERROR; and it displays "The data of the Legal Entity are not specified." The code I add worked on another online store. There is an assumption that this is not a standard Bitrix error, but created by the developers of this particular site. Where to look? How to understand the absence of which field swears?

I also looked in the list of Bitrix users for the fields that are indicated for existing users. In the parameters, it seems, I pass everything that I need.

Answer 1

The simplest thing is to look for the text of this error throughout the code.
If you don’t have a project locally, don’t have code in git, don’t have access to the server console (to search there using grep), then unwind the chain from the file /local/php_interface/init.php or /bitrix/php_interface/init.php (depending on what is).
You need an OnBeforeUserAdd handler, look for it.
If not there, look at the installed custom modules, look for the same event handler.