There are five firming types, viz. 0, 1, 2, 3, and 4.
Listed below are the characteristics of these four firming types:
0 - PTF has not effect on planning.
The system does not firm procurement proposals automatically.
1 - All unfirmed planning proposals (planned orders/purch reqs) moving into PTF will automatically be firmed by the system, thus protecting them from anymore automatic changes due to subsequent planning runs). At the same time, if the MRP engine identifies any shortage within PTF, the system will create new planned orders, but schedule them to lie JUST outside the end of PTF, thus leaving them as unfirmed elements.
2 - All unfirmed planning proposals (planned orders/purch reqs) moving into PTF will automatically be firmed by the system, thus protecting them from anymore automatic changes due to subsequent planning runs). BUT, the system will NOT create any new planning proposals to cover the shortages identified within PTF. The shortage is left as a -ve qty for the planner to deal with manually.
3 - No automatic firming of any unfirmed planned orders, even if they move into PTF. They will be moved out to lie JUST outside the PTF. The system will create new proposals to cover the shortage but schedule them outside the PTF and keep them as unfirmed.
4 - No automatic firming / No automatic creation of planning
proposals to cover shortage.
Procurement proposals that move into the planning time
fence are not firmed automatically by the system. The system does not create
any new procurement proposals within the planning time fence; that means,
the system does not balance the shortage situation in the planning time
fence.
Dependencies
If you enter a manual firming date then the firming date is automatically extended until this date.
You can manually enter a firming date in the initial screen of the planning run and in the stock/requirements list in MRP and long-term planning.
