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Kathy Barthelt

Infor LN & Baan Tips & Tricks for OPERATIONS: What is Statistical Inventory Control (SIC) and How Does It Work?

Statistical Inventory Control (SIC) is an inventory-controlled order system designed to maintain stock levels based on predefined thresholds, rather than being demand-driven like EP (Enterprise Planning). Since SIC relies on inventory levels, it may lead to higher stock levels. To minimize financial risks, SIC is best suited for:

  • Low-cost items.
  • Items with predictable demand or short lead times.


Applications of SIC

  • Low-Cost Items: Particularly effective for inexpensive goods.
  • Predictable Demand or Short Lead Time: Suitable when demand patterns are stable or lead times are minimal.
  • Warehouse-Specific Planning: Useful for planning by warehouse rather than across the supply chain.
  • Trading Industries: Commonly employed in sectors like supermarkets.
  • Immediate Demands: Effective for items required immediately by customers.
  • Ease of Use: Simple to implement and manage.


Limitations of SIC

  • Does not account for dependent demand from planned orders (e.g., MPS/MRP/INV).
  • Does not generate distribution orders.
  • Ignores time-phased planned orders.
  • Lacks forecast consumption techniques.
  • Uses both nettable and non-nettable warehouses.

How SIC Works

SIC operates based on the Reorder Point, Stock Levels, and Order Method.

Triggering SIC

When Economic Stocks (calculated as On-Hand Inventory + On-Order – Allocated Stocks) on the Horizon Date fall below the Reorder Point, SIC triggers the creation of:

  • Planned Purchase Advice.
  • Planned Production Advice.


Order Methods in SIC

The quantity for these advices is determined by the Order Method, which can be one of the following:

  • Replenish to Maximum Stock
  • Fixed Order Quantity
  • Economic Order Quantity (EOQ)
  • Lot-for-Lot

Example: SIC in a Supermarket

Scenario: Managing stock for Ice Cream (1 Kg Pack)

  • Current Stock: 10 PCs
  • Reorder Point: 5 PCs
  • Safety Stock: 2 PCs
  • Lead Time: 1 Day
  • Order Method: Replenish to Maximum (Maximum Stock: 20 PCs)
  • Maximum Anticipated Consumption: 3 PCs/Day

Process:

  1. Customer purchases reduce the stock.
  2. When stock reaches 5 PCs, SIC is triggered.
  3. A Purchase Advice is generated for 15 PCs to replenish stock to the maximum level (20 PCs).
  4. During the lead time (1 day), the remaining 3 PCs (excluding Safety Stock) meet customer demands.
  5. In emergencies, Safety Stock can also be utilized.

Statistical Inventory Control offers a practical approach for managing inventory levels, particularly in industries with predictable demand or fast-moving items. However, its limitations make it less ideal for complex or time-phased planning scenarios.

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Tips:  LX | BPCS | M3

Tips: LN | Baan

Use this session to define simulated purchase prices for purchased items per site.

Field Information:

  • Cost Calculation Code - price calculation code
  • Item

The raw materials, subassemblies, finished products, and tools that can be purchased, stored, manufactured, and sold.

An item can also represent a set of items handled as one kit, or which exist in multiple product variants.

You can also define nonphysical items, which are not retained in inventory but can be used to post costs or to invoice services to customers. The examples of nonphysical items:

  • Cost items (for example, electricity)
  • Service items
  • Subcontracting services
  • List items (menus/options)
     
  • ​Site - The site for which the purchase price is simulated.
  • Purchase Currency - The currency of the simulated purchase price.
  • Simulated Price - Purchase price

The simulated purchase price and currency are recorded twice.

  • Simulated Price Multi Currency - The purchase price in multiple currencies.

The simulated purchase price and currency are recorded twice. The amount in this field is related to the price of the supplier.

  • Unit - Purchase price unit
  • Cost Component - The cost component that must be of the type Material Costs.

Note: The cost component specified in this field does not become part of the standard cost detail structure if it is part of the cost component scheme of the selected item. If calculations are performed with a calculation code not used for actualization (simulations only), the simulated purchase price is mapped to the cost component defined in the records for this session.

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