Anyone out there using CTP?

Totally agree. You will need a good scheduler, good processes and
good education.

As robert as stated, your MOM and definition of resources will need
to be accurate. It is probably going to be a bit of a learning curve
and iterative approach.



--- In vantage@yahoogroups.com, Robert Brown <robertb_versa@...>
wrote:
>
> CTP is one of those 'nice in theory' functions that, in practice
(on any platform, not just Vantage) rarely fulfills its promises.
>
> Think about it...
>
> If you are finite resource scheduling and routinely run the
Global (nightly) to optimize your schedules, common critical resource
capacity is almost assuredly packed tight with load. As a result, CTP
will give you longer-than-you-'really'-can-do order promise date
suggestions.
>
> If you are infinite scheduling, CTP will blindly overload a
(potentially critical) common resource and give you over-
optimisticly 'rosy' order promise date suggestions (that you may not
be able to 'juggle schedule' your way out of.
>
> Similarly with purchased items that may be on the critical path
determined by CTP. Unless all your purchased items are on reliable
(re delivery) purchasing contracts (ex.; Part "A" WILL always be
delivered in 5 days), purchased item lead times (used by MRP and CTP)
are self deceiving 'white lie' to ourselves.
>
> Vendors have variable load and lead time just like our own
internal resources. At best, purchased part lead times are estimates.
Basing an order promise upon a Part Lead Time is a crap shoot at
best. Unless it is a readily available off the shelf item (standard
fasteners, etc.,) available from multiple sources, until you contact
the vendor and get a firm delivery date the lead time isn't much use.
>
> All that said, the audit trail of vantage 8.03's CTP can at least
help you identify the critical constraints when promising an order
for which all materials are not in stock and unallocated to other
orders.
>
>
>
> wbsnow999 <wbsnow999@...> wrote:
> We are in the process of implementing our outdoor
furniture and site
> amenities factory with Epicor and are looking to schedule our
orders
> and give accurate promise dates to customers.
>
> We are prototyping CTP and have run into some questions. Wonder if
> anyone else uses CTP in production and can share their experience
with
> us.
>
> THanks in advance.
>
>
>
>
>
>
> ---------------------------------
> Yahoo! oneSearch: Finally, mobile search that gives answers, not
web links.
>
> [Non-text portions of this message have been removed]
>
We are in the process of implementing our outdoor furniture and site
amenities factory with Epicor and are looking to schedule our orders
and give accurate promise dates to customers.

We are prototyping CTP and have run into some questions. Wonder if
anyone else uses CTP in production and can share their experience with
us.

THanks in advance.
CTP is one of those 'nice in theory' functions that, in practice (on any platform, not just Vantage) rarely fulfills its promises.

Think about it...

If you are finite resource scheduling and routinely run the Global (nightly) to optimize your schedules, common critical resource capacity is almost assuredly packed tight with load. As a result, CTP will give you longer-than-you-'really'-can-do order promise date suggestions.

If you are infinite scheduling, CTP will blindly overload a (potentially critical) common resource and give you over-optimisticly 'rosy' order promise date suggestions (that you may not be able to 'juggle schedule' your way out of.

Similarly with purchased items that may be on the critical path determined by CTP. Unless all your purchased items are on reliable (re delivery) purchasing contracts (ex.; Part "A" WILL always be delivered in 5 days), purchased item lead times (used by MRP and CTP) are self deceiving 'white lie' to ourselves.

Vendors have variable load and lead time just like our own internal resources. At best, purchased part lead times are estimates. Basing an order promise upon a Part Lead Time is a crap shoot at best. Unless it is a readily available off the shelf item (standard fasteners, etc.,) available from multiple sources, until you contact the vendor and get a firm delivery date the lead time isn't much use.

All that said, the audit trail of vantage 8.03's CTP can at least help you identify the critical constraints when promising an order for which all materials are not in stock and unallocated to other orders.



wbsnow999 <wbsnow999@...> wrote:
We are in the process of implementing our outdoor furniture and site
amenities factory with Epicor and are looking to schedule our orders
and give accurate promise dates to customers.

We are prototyping CTP and have run into some questions. Wonder if
anyone else uses CTP in production and can share their experience with
us.

THanks in advance.






---------------------------------
Yahoo! oneSearch: Finally, mobile search that gives answers, not web links.

[Non-text portions of this message have been removed]