The firming type dictates the behavior of planning with PTR (Planning Time
Fence), i.e whether the system should automatically firm the unfirmed planned
orders and purchase requisitions, which are outside the PTF as they move to fall
within PTF as days progress and also if new planning proposals are needed to be
created to cover the shortage within PTF.
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.
1 - All unfirmed planning proposals (planned orders/purch reqs) moving into
PTF will automatically be firmed by the system, thus protecting them from
anymore automatica 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 automatica 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.
