Raw material and finished goods are stored within the warehouse. Within a manufacturing environment, a PICK WO transaction lets staff pick the components of the assembled item. They assemble the item in another location, then when finished, return the item to storage. A RCT WO (receipt- work order) transaction signifies the receipt of the finished good in storage. Once returned, finished goods are inspected in a separate inspection location. BACK WO is the transaction type for a sample return after inspection.