We are using SP2013 on-premise standard edition. In one of site collection we have created several subsites (and sub-subsites). Under root site and subsites there is a list "News" created with same list template.
When user input a new item in subsite list, some logic need to replicate the same item towards the list at the root site.
Once the item is created at two different lists, user will handle the item differently. (For instance, one is deleted and another is modified for new value) Hence, content query webpart is not an option.
I have considered list workflow but I believe workflow cannot create item across site.
Is there any other alternative?