
Header Billing Plans in Milestone Billing
The system copies the basis for the header billing plan from Customizing. In milestone billing, the following functions are carried out at item level:

Handling milestones
Dates generated in the header billing plan and milestones set in the header billing plan (Edit
If you want to schedule milestones in an item separately from the header, you must first remove the item from the header billing plan before milestones can be assigned to it.
All manually set milestones will be deleted when you reassign this item to the header billing plan. Header data will once again be valid for the item.