Recording placement facts
After source verification the operator records one placement fact per item movement. The cycle is short: pick a planned product line, choose the target type (Cell or Container), scan or select the target, enter the quantity, save with the checkmark button. The saved fact appears on the document screen as part of the running totals; the operator advances to the next line.
When the document is in Planned status, the first saved fact automatically transitions it to In progress.
Putaway source
From a receiving cell
The operator works directly from the source receiving cell. Each fact debits from that cell. The PDT shows the planned product lines for this document; the operator picks one, sets the target and quantity, and saves.
From a sender container
The operator works from the source supplier container. The PDT shows the lines for the products inside that container; each saved fact debits from the container, not from a receiving cell.
Attaching a carrier (trolley)
For multi-drop operations the operator can attach a carrier to the document at any point during fact recording — the carrier button on the screen opens a picker dialog. This is optional; documents can be completed without ever attaching a carrier.
When the source is a receiving cell (the location variation above): on the first carrier attachment the system automatically creates a buffer container — a system-managed accounting unit that takes over from the receiving cell as the source of unplaced stock. The remainder is now accounted for on the buffer container; subsequent facts debit from the buffer container rather than from the receiving cell. Physically, the operator transfers goods from the receiving cell into a physical container on the carrier — that physical container is what the system records as the buffer container. Reservations move automatically.
When the source is a supplier container (the container variation above): attaching a carrier does not create a buffer container. The supplier container itself remains the accounting source. The carrier is used as a means of physical transport between cells.
The carrier and the buffer container are not the same thing. The carrier is equipment (a trolley). The buffer container is an accounting unit on it. Changing the carrier later in the operation does not change the buffer container — it stays bound to the document for the rest of execution.