Funnel Step
BeginnerA funnel step is one link in a defined funnel sequence, specified by a single event and, where needed, by conditions on that event's properties.
Each step counts the distinct users who satisfied its condition after satisfying the previous one, which is why the numbers along a funnel never rise. The same event can serve more than one step, and a step can be a page or screen rather than a product event. Two settings always ride on steps: whether the declared order is mandatory, and whether other events may occur in between. The common misreading is treating a step count as event volume: someone who added five items to the cart is one user at the add-to-cart step, so the step count and the event count for the same action are different numbers.
Sources:GA4 — Funnel exploration