There are boundary and point ZIP5 code types. Most of us live in a boundary ZIP code, an area covering several street blocks with the same ZIP code assigned by USPS. But there are also point ZIP codes assigned to large facilities like hospitals or military bases. Check out
When you build a territory in MBO, you use the boundary ZIP code layer that logically contains only boundary ZIP codes. That is because in MBO you build spatial territories, territories that have geographical extent, while a point ZIP code has essentially 0 extent.
CRM systems often use non-spatial (attribute) approach to territories. They simply map a ZIP code present in a customer address to a territory. This is where you will need point ZIP codes and luckily MBO supports exporting both boundary and point ZIPs segmented by a territory. The article shows how to export the ZIP codes.