Form Lots according to settings / Crosss Period Lot Size Planning / SNP Optimizer

[former_member568621]

Dears,

How is SNP Optimizer expected to create Planned Orders with the SNP Global setting?

"Form Lots according to settings"

1) Will planned orders be created with a minimum quantity of Minimum Lot Size that is maintained in MAT1 ?

2) Will planned orders be grouped together in a bucket to be equal to atleast the minimum Lot Size that is maintained in MAT1

3) What does the setting "Cross Period Lot Size" Setting in SNP Optimizer Profile do (Integration Tab) in conjunction with the settings above?

4) What does the setting "Cross Period Lot Size in Resource do in conjunction with settings above?

Note we use SNP. With PDS from Recipe and BOM. No Routing. All Single Mixed Resources used

Standard SAP.

Please make suitable assumptions. I am looking forward to some real example with a simple case.

Weekly Customer Demand 9ADFCST - 500 each bucket for next 52 buckets

Min Lot Size in MAT1 - 300

SNP Global Setting for Optimizer- Consider Lots according to 'settings'.

Single Source of Supply for the entire period

Consider a Supply Chain Model like this

Customer had demand

Distribution Center with 0 stock

Production Plant with 0 stock

T-Lanes exist such that Production Plant supplies to DC and DC supplies to Customer.

No Lot size in Tlane

No lot size in PDS

No other competition for materials exists.

No Resource Issues with SNP PDS.

How will system go ahead with creating planned orders?

Thanks

Amit

[former_member244427 · Accepted solution]

Hello,

"Form Lots according to settings" it means that the optimizer will conditioner the lot-size data maintained in the product master and PPM and will split the orders if required.

Example demand 400 fixed lot size 200 it will create 2 orders of 200 each.

Now it comes with a pinch of salt, what lot size data is considered by the optimizer, the F1 help mentions it considers Fixed lot size data and rounding value.

In order for the SNP optimizer to be able to take into account the minimum lot sizes defined in the PPM or location product master, you must also choose the discrete optimization method in the SNP optimizer profile and enter a discretization horizon.

"Cross Period Lot Size" is a little different subject, it deals with how to optimize the setup time, for example you have 1 PPDS planned order and 2 SNP planned orders in the same bucket for the same product using same process, will you perform the setup operation after every order, if you answer is no, then Cross Period Lot Size is your solution.

If you have integrated SNP and PP/DS planning (the SNP PPM and PP/DS PPM are linked), the optimizer takes into account setup statuses from PP/DS. This means that the optimizer does not take into account setup consumption and setup costs if a PP/DS order for the associated PP/DS PPM already exists in the corresponding bucket. If you want to have this integration, you must set the Cross-Period Lot Size Planning indicator the Lot Size Planning: Not Cross-Period indicator (if your lot size planning is not cross-period) on the Integration tab page in the SNP optimizer profile.

Following SAP help is a Good Read for your Lot Sizing related questions.

Lot Size Planning - Sap Help

Regards

Abhishek

[former_member568621]

Thanks Abhishek,

SAP marvels at spreading out the help in 10 different places. They shouldn't even have a heading like 'Lot size planning'. Instead talk about how and and when lot sizes are really relevant in various planning applications.

"Form Lots according to settings" has possibly no meaning in any language on earth that humans can understand.

They can squeeze 10000 lines of English in 40 equations of Mathematics but they won't.

Anyway thanks for your patient explanation.

Amit