You may find that you've decided to add a new packaging process to production, but when you try to add it to existing finished goods, it isn't listed in the pack type field in the Item Master Data. To do this, you'll want to open the Pack Type Table, where you'll be able to add new pack types to the list.
1. Click on Tools in the toolbar.
2. Scroll down to User Defined Windows
3. Scroll down and select ORC_BE_PACK_TYPE
Once you've opened the Pack Type Table, at the very bottom you'll find a yellow field were you can add a new pack type and all the parameters within it.