Hierarchies are custom variables that you can use however you’d like. They do not persist beyond the hit that they are set. Up to 5 hierarchies are available if your contract with Adobe supports it.
Each hierarchy collects data from the
h5 query string in image requests. For example, the
h1 query string parameter collects data for Hierarchy 1, while the
h4 query string parameter collects data for Hierarchy 4.
hier5. See hier in the Implement user guide for implementation guidelines.
Since hierarchies contain custom strings in your implementation, your organization determines what the dimension items are for each hierarchy. Make sure that you record the purpose of each hierarchy and typical dimension items in a solution design document.