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PPDS PP heuristic is not respecting fixed receipt elements

former_member309586
Participant
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Hi Gurus,

We are trying to standard lot heuristic and we see that when generating new orders system is not counting fixed planned order and process orders after planning time fence  to generate the orders.

It will be helpful if any one can suggest

Thanks in advance

Regards,

Rajesh

Accepted Solutions (1)

Accepted Solutions (1)

Former Member
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Hello Rajesh,

In the heuristic of standard lots check what is the reuse mode option. It
should be selected to Use Suitable Receipt Elements (below you have
explanation).

Thanks, Marius 

The heuristic determines
the uncovered requirements using the net requirements calculation. The
heuristic only takes account of the fixed receipts, that is, the receipts with
the status PP firmed.
Using the procurement quantity calculation and source determination, the
heuristic determines the data for the procurement proposals that can cover the
uncovered requirements. Before the heuristic creates a new procurement
proposal, however, it searches in the reuse interval for an
existing, unfixed procurement proposal that "fits the bill", meaning
that it has the same quantity, the same source of supply, and the same
characteristics. For products with discrete receipts, the order priority must
also match. If several suitable procurement proposals exist in the reuse
interval, the heuristic chooses the procurement proposal based on its
availability date/time and the defined reuse strategy.
The heuristic only creates a new procurement proposal if it does not find a
suitable procurement proposal in the reuse interval.

Answers (1)

Answers (1)

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Hi Rajesh,

You can try switching the Net Requirements Calculation procedure from "Avoid Surpluses" to "FIFO". This will make sure that the first firmed receipt will be allocated to the first requirement in the horizon, then to the second requirement, etc. The heuristic will, then, not create orders earlier than required.

Regards,

Tiago

former_member309586
Participant
0 Kudos

Hi Tiago,

Thanks for your response. Can you please suggest where i need to switch the

net requirement calculation procedure from "avoid surpluses"  to FIFO?

It will be helpful

Thanks & Regards,

Rajesh

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Hi Rajesh,

In Planning of Standard Lots heuristic (SAP_PP_002), this is the first setting shown in Basic Settings tab:

Assuming you are running SAP_PP_002, you can either copy SAP_PP_002 as a new heuristic (e.g. ZAP_PP_002) and change the procedure in the new heuristic via /SAPAPO/CDPSC11 transaction. Afterwards, you need to execute planning with the changed heuristic.

If you prefer, at the Product View, you can click on button 'Variable Heuristic', then select the heuristic you want to execute. At this point, the heuristic settings will be shown in the screen and you can change the net requirements calculation procedure from 'Avoid Surpluses' to 'FIFO' and execute it immediately to check the results.

Regards,

Tiago

former_member309586
Participant
0 Kudos

Hi Tiago,

Thanks for the response. Yes we are you the same heuristic with "Shelf life".

Please suggest FIFO will work shelf life ?

Please let me know . Thanks again in advance.

Thanks & Regards,

Rajesh

0 Kudos

Hi Rajesh,

With Shelf Life, this is not recommended, because it makes it more likely that a receipt and a requirement which are far apart will be allocated with each other.

Additionally, please check whether the firmed receipts (and those inside the Planning Time Fence) can actually be allocated to the demands. It may be that the receipts expire before the minimum shelf life of the requirement, making it impossible for the system to allocate them.

Regards,

Tiago