Here is my understanding/experience with ATP & CTP
Here is the key:
Available = what can happen NOW
Capable = what can happen in the future
Both are supposed to take all demand sources into account in their calculations.
Difference is that ATP is supposed to tell you what quantities are currently scheduled to be available when. Such as, currently there is 20 on hand, but tomorrow there is an SO to consume 10 but the same day there is a Job to supply 5 and the next day a PO to supply 5 more. So it will display that ATP for each day that there is a Demand/supply activity schedule.
CTP (if used correctly) does the same thing but focuses more on what can be done within the confines of the current schedule. So let's say you are out of stock and there are not any supply sources currently schedule, CTP will basically run a rough schedule MRP on the current schedule to determine the best case earliest that a product can be supplied (either via a Job or PO) With Job's the mini MRP considers all the required resources current load to calculate when the job can be completed. With PO's it takes the suppliers and/or parts Lead Time to determine when a PO will be delivered. I think it also can take into account the Receive Time & Production Buffer values to help improve the accuracy.
Does that help?
-Rick Bird
IT Software Administrator
Rowmark, LLC.
Here is the key:
Available = what can happen NOW
Capable = what can happen in the future
Both are supposed to take all demand sources into account in their calculations.
Difference is that ATP is supposed to tell you what quantities are currently scheduled to be available when. Such as, currently there is 20 on hand, but tomorrow there is an SO to consume 10 but the same day there is a Job to supply 5 and the next day a PO to supply 5 more. So it will display that ATP for each day that there is a Demand/supply activity schedule.
CTP (if used correctly) does the same thing but focuses more on what can be done within the confines of the current schedule. So let's say you are out of stock and there are not any supply sources currently schedule, CTP will basically run a rough schedule MRP on the current schedule to determine the best case earliest that a product can be supplied (either via a Job or PO) With Job's the mini MRP considers all the required resources current load to calculate when the job can be completed. With PO's it takes the suppliers and/or parts Lead Time to determine when a PO will be delivered. I think it also can take into account the Receive Time & Production Buffer values to help improve the accuracy.
Does that help?
-Rick Bird
IT Software Administrator
Rowmark, LLC.
--- In vantage@yahoogroups.com, "Turgeon, Bill" wrote:
>
> Does anyone use Capable to Promise?
>
> What is the difference between Available to Promise and Capable to
> Promise?
>
>
>
> Does either of them take into account; allocations, demand, etc?
>
>
>
>
>
> Regards,
>
>
>
> Bill Turgeon
>
> Director, Information Technology
>
> Coto Technology, Inc.
>
> 66 Whitecap Drive
>
> North Kingstown, RI 02852
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> E-mail: bturgeon@...
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