Valid groupBy fields
Collections which started in the same second.
Collections which started in the same minute.
Location of the load generator which ran the collection.
Network profile used for for the collection.
Collections which share the same error. This is not directly related to errors within the page/transaction, etc.
Type of element. For example, transaction, page.
Name of the element.
Hierarchy expressed as a path. For example, "Shopper Clip," "Cart transaction," "Cart page."
Hierarchy where each node of the hierarchy is a node in the JSON and the JSON reflects a parent/child set of relationships.