Bitrix24 box. When adding a user $USER->Add I get an error 500, what's wrong?

Question

Bitrix24

The user is created when adding the "Personnel changes" IB element using the AddEventHandler("iblock", "OnBeforeIBlockElementAdd", "OnBeforeIBlockElementAddHandler"); In the handler, the user's data is formed into an array and added using $USER->Add, but if I add the "UF_DEPARTMENT" field to the user, which is "Binding to sections of info blocks" - the info block of the department, Bitrix simply returns an error 500. Where to dig?

Answer 1

Пользователь создается при добавлении элемента ИБ "Кадровые изменения"

You should not use this mechanic, because... drumroll!... Adding an employee to the portal creates an entry in the "Personnel changes" IB. This way you get an infinite loop: a record creates a user that creates a record that creates a user...
Give up your mechanics in favor of simply adding a user, or if you really don’t want to at all, then put a restriction on the recursion ( for example, like this )