I am on designing an ERP application. We have many forms with nested objects inside and many form elements.
I tried to design the form like this example.
But it seems that showing nested forms and objects may confuse the user.
What is the best way to design a form like the above example?
Footnote: The "Next" and "Back" buttons not represents a multi-step form. In fact, all the inputs and objects -shown as collapsible- are part of a single object and should be shown as a single page in our form. I just need a way to represent multi-level (nested) object in best way to prevent confusing users.