"Single line orders" in the context of e-commerce or logistics refer to orders that contain only one type of item or SKU (Stock Keeping Unit). This means the order consists of multiple units of the same product, but does not include a variety of different products.
For example, if a customer orders ten units of the same model of a smartphone, it's considered a single line order. This is in contrast to multi-line orders, where an order might contain different types of items, such as a smartphone, a pair of headphones, and a phone case.
Single line orders are generally simpler to process in a warehouse or distribution center because they involve less picking and sorting compared to multi-line orders. This can lead to more efficient handling, packing, and shipping processes.