Open the [Packing List] tab of the Shipping Management document. There are two places where you can see this: 1. "Associated PI Orders" lists every PI used in this Shipping Management document. Click [Locate Items] for a PI, and the screen will scroll directly to that PI's items and packing locations. After reviewing, click [Cancel Locate]. You can drag the handle on the left to reorder PIs; it saves when you release. 2. "Shipped Items" are grouped by order. The title row above each group is for that PI. The [Edit All Items in This Group] button on the title row lets you modify all items from the same PI at once. The [Commercial Invoice] tab also has "Associated PI Orders," but it's read-only. One Shipping Management document can contain multiple PIs, but they must be from the same buyer and have the same trading conditions, ports, and currency. If a PI shouldn't be in this Shipping Management document, click [Remove] in "Associated PI Orders".