How inventory transactions fit together

Why this step

Everything from here is one idea: material moves between two locations, and every screen is a different way of asking for that. A receipt, a delivery, an internal transfer and a count correction are the same record with different ends on it. The operation type is the to-do list a movement belongs to, the transfer is one trip, the operations inside it are the products, and behind those sit the exact lots and shelves that were used.