Error getting an item in a subclass though the REST API

[sebdesign]

Hello,

I'm trying to get items through the REST API. Making a GET /RestItems request returns correctly all the items, allowing me to make an additional GET /RestItems requests with the uri of a given item from the initial list.

This works as intended for the (root) items that are not in any class/folder in my TAO application.
When I make a GET request for a nested item, I get a HTTP 412 error with the following body:

{
    "success": "false",
    "errorCode": "0",
    "errorMsg": "One of the precondition for this type of request was not satisfied",
    "version": "3.1.0-sprint19"
}

How can I access any item, nested or not? Or is there any endpoint where I could get uris for classes/folders and get each each class' items?

Thanks in advance.