Primary collection

The IDO collection associated with and bound to a form at the time of the form's creation

• If a form has only one IDO collection associated with it, that collection is, by definition, the primary collection.
• If a form has more than one IDO collection associated with it (such as a subcollection or secondary collection), the primary collection is considered the top-level IDO collection on the form.

There can be only one primary collection per form.