How to identify a problem with web forms?

Question

1C-Bitrix

Good afternoon!

The site has several forms. There is a form on the main one, in its settings (like everyone else) in the "Access" tab (Permissions of groups on this form) values ​​\u200b\u200bare set [10] - filling out the form . But when sending, the message "Error! Access denied" appears. This message did not disappear even after I put down the values ​​[30] - full control . Moreover, if I go to the page under the admin, fill it in and send it, then it works and the data appears in the admin panel with the value in the "Creator" column - admin.

In this issue, I can’t even determine what the problem could be, and not just how to solve it. So, can someone tell me how to determine what could be the problem?

Answer 1

I will assume that access is not indicated in the statuses