Thanks to all for your info
After a bit more testing we have found that :-
For Purchase Direct Materials
If the material has a L.T. in Part Plant whether it is marked as
constrained or not, then the Schedule is driven by the L.T., once a
P.O. is generated for that material the Due Date IS used to drive the
schedule, and this appears to work even if the material Due Date on
the P.O. is sooner than the material L.T. in Part Plant. (If the
Material does not have a L.T. then the schedule DOES NOT pick up the
P.O.Due Date.) Very strange.
However, once the material is fully received on to the Job, the L.T.
takes over again and is STILL seen as a constraint. This also happens
if the L.T.is in the Supplier Price List. This means that thwe
associated operation is always pushed into the future by the length
of the L.T.
Stock Material
If a material has a L.T. AND is marked as 'Constrained' the schedule
is driven by the L.T. if there is not enough stock. However, due date
on the inventry P.O. does not affect the schedule which is still
constrained by the material L.T.
According to EPICOR, the L.T. issue on Purchase Direct material is
fixed in 406, so we are about to load 406A onto our test system and
will run some trials next week.
Thanks again and will keep you posted
Tim
--- In vantage@yahoogroups.com, Robert Brown <robertb_versa@...>
wrote:
set up. In that case, the LT in the appropriate price list takes over.
Min and a PO exists due within that PO vendor's specified LT for the
part - you will not get an expedite message as it assumes you can't
do any better than that L/T.
that L/T from) - and that receipt will result in sufficient available
material (above requirements to that date plus your Min O/H and
Safety) - do you still see the behavior?
would (any material) - and "use" the scheduled PO receipt - as long
as that use still results in the part staying at or above your Min
O/H + Safety in a time phase view.
After a bit more testing we have found that :-
For Purchase Direct Materials
If the material has a L.T. in Part Plant whether it is marked as
constrained or not, then the Schedule is driven by the L.T., once a
P.O. is generated for that material the Due Date IS used to drive the
schedule, and this appears to work even if the material Due Date on
the P.O. is sooner than the material L.T. in Part Plant. (If the
Material does not have a L.T. then the schedule DOES NOT pick up the
P.O.Due Date.) Very strange.
However, once the material is fully received on to the Job, the L.T.
takes over again and is STILL seen as a constraint. This also happens
if the L.T.is in the Supplier Price List. This means that thwe
associated operation is always pushed into the future by the length
of the L.T.
Stock Material
If a material has a L.T. AND is marked as 'Constrained' the schedule
is driven by the L.T. if there is not enough stock. However, due date
on the inventry P.O. does not affect the schedule which is still
constrained by the material L.T.
According to EPICOR, the L.T. issue on Purchase Direct material is
fixed in 406, so we are about to load 406A onto our test system and
will run some trials next week.
Thanks again and will keep you posted
Tim
--- In vantage@yahoogroups.com, Robert Brown <robertb_versa@...>
wrote:
>is not used in purchasing suggestions if a primary approved vendor is
> Nick hit the nail on the head. The Part Plant maintained lead time
set up. In that case, the LT in the appropriate price list takes over.
>specific vendor LT) also impacts Change suggestions. If you are below
> The price list in effect for each PO (and the associated part's
Min and a PO exists due within that PO vendor's specified LT for the
part - you will not get an expedite message as it assumes you can't
do any better than that L/T.
>like I described above with Change suggestions.
> Tim: I think the scheduler interprets constrained materials much
>coming in SOONER than the part L/T (no matter where it is getting
> However, that suggests that if a PO for the constrained part is
that L/T from) - and that receipt will result in sufficient available
material (above requirements to that date plus your Min O/H and
Safety) - do you still see the behavior?
>constrained materials would be treated by the scheduler much like ATP
> As long as the part isn't flagged as buy direct, I would think
would (any material) - and "use" the scheduled PO receipt - as long
as that use still results in the part staying at or above your Min
O/H + Safety in a time phase view.
>promise.
> If it doesn't, it is just another feature that doesn't fulfill its
>8.03.405A
> Rob Brown
>
>
>
>
>
>
> --- On Mon, 11/17/08, nmtaylor1969 <n.taylor@...> wrote:
> From: nmtaylor1969 <n.taylor@...>
> Subject: [Vantage] Re: Constrained Materials and scheduling
> To: vantage@yahoogroups.comwork
> Date: Monday, November 17, 2008, 8:42 AM
>
>
>
>
>
>
>
>
>
>
>
>
>
> Tim,
>
>
>
> This is all very close to my heart...! Firstly we run 8.03.305, and
>
> in this version the constrained material concept doesn't seem to
>it
> properly and we eventually gave up trying. Even setting the
>
> constrained material flag in the MPF doesn't work. You would think
>doesn't
> would be logical to drive your scheduling based on those materials
>
> which you have defined as constrained, but in 305 the system
>process
> do this :o(
>
>
>
> The material due date is generated by MRP from the scheduling
>in
> and not the other way around, so this date will not drive the
>
> scheduling process. Additionally, the PO release promised date is
>
> ignored by the MRP calculation and is "cosmetic" only.
>
>
>
> The lead time in the vendor price list affects the "order by" date
>wrote:
> the buyer workbench. I could be completely wrong here, but I didn't
>
> manage to get the MRP lead time to have any effect on raw materials.
>
>
>
> Nick
>
>
>
> --- In vantage@yahoogroups .com, "fredcarnot" <fredcarnot@ ...>
>operation
> >
>
> > Constrianed materials do drive the scheduling date for an
>Buy
> > based on the materials lead time. As most of our materials are
>schedule
> > Direct, material availability is a key element of our ability to
>
> run an
>
> > acurate schedule. However, as with our materials, there is hardly
>
> ever
>
> > a standard lead time, I was hoping that I could drive the
>constraint
> > using the material due date in the Purchase Order as the
>what
> > rather than a standard material lead time. I can not get this to
>
> work,
>
> > I assume that it should.
>
> >
>
> > If this does not work, and we need to rely on Lead Times, then
>
> > action starts the lead time count-down, raising the Purchase
>
> Order ????
>
> >
>
> > Grateful for any help on this.
>
> >
>
> > Thanks
>
> > Tim
>
> >
>