How to fill in the logistics order number on Taobao: Seller Center---Logistics Tools---Address Library, you can modify the seller's address yourself.

After the seller delivers the goods, the courier company will keep the delivery order, which has the express delivery number, and return the goods to the midpoint of the sold product. Then, according to which logistics company the seller sent, the corresponding order will be sent. Fill in the express delivery number accordingly, and then Baby will automatically generate logistics information based on the actual logistics situation.