PeopleSoft Enterprise Inventory Policy Planning 9.1 PeopleBook

Simulating Inventory Policies

This chapter provides an overview of policy simulation and discusses how to:

Define policy simulation parameters.
View simulated inventory policies.

Understanding Policy Simulation

Policy simulation is the process of defining and running what-if scenarios for inventory items without changing the live data for the items. Before you apply new values, you can simulate the effects of various stocking scenarios, compare the current policy with a simulated policy, and determine the best inventory investment strategy.

PeopleSoft Inventory Policy Planning simulations provide you with immediate answers to adjustments that you might consider making to meet goals in customer service levels, inventory turnover rates, and return on investment.

Use policy simulation to:

Change policy parameters, such as the order quantity or safety stock level, for a policy item.
Compare current and simulated policy values for an item before you commit it into operation.
View the simulation results in table and chart formats.
View current and simulated annual costs, orders, and investments, and compare the results of the last two simulations concurrently.
Apply changes made to item policies during simulation to the master policy for the items.

Using simulation routines, you change lead time, order methods, values for use with those methods, and planning values. Selecting a policy control other than the one to which the item is currently assigned populates the simulation scenario with the default parameters from the control group that you select.

You can accept the new parameters or change the entire policy setup for an item. For example, you might want to see the effect on safety stock requirements for an item if you change the value for the percent demand fill method from 97 to 99.

To perform simulations, you define a scenario with the policy parameters that you want, have the system calculate the simulated policy, and then view the results. You can change the parameters as often as needed, individually or in combination to determine how different scenarios affect a policy. All simulations are temporary until you select to apply a specific policy. Then, the system updates the item's policies to match what you've defined.

To set up the policy, view simulated policies for an item, and apply the new policy:

Set up security for policy items.
Use Policy Simulation to access the simulation pages.

To use Policy Simulation, select Process Policy, Simulate Policy. The initial simulation pages include: Order Quantity, Safety Stock, Reorder Point, Minimum/Maximum, and Other Data.
Determine the control group that you want to use to begin the simulation.

Policy values for the control group represent a starting point from which you can perform what-if scenarios for an item. When you perform policy simulations, you use two sets of pages: One set controls the parameters for the simulation, and the other set provides simulation results.

When defining parameters, you define options, methods, and arguments for the inventory policy that you want to simulate for the item. You can change these parameters one at a time or in any combination to view the effects on the inventory item's policy.

Some parameters have dependencies on other parameters so that there is a logical flow in adjusting parameters. For example, the safety-stock value is the result of the selected method and argument for the safety stock option as well as the selected lead time and the results from the order quantity policy.

When displaying simulation results, you can review and compare how the new parameters affect the inventory policy for the item. The simulated policy doesn't overwrite or change the existing policy until you click the Apply button.
Use the simulation pages to make changes to an item's policy, and then click the Calculate button to view the results of the changes that you made.
Review the simulation results by using the available links.

Make additional changes when you click the Return link. When you review the latest changes, you can also compare the annual cost, orders per year, and investment to the last set of changes that you made along with the current policy for the item.
When you determine a scenario that best suits the business needs, click the Apply button.

The system updates the item's policy data immediately. The changes override control group values that are currently assigned to the item, and they are permanent. However, neither PeopleSoft Inventory nor PeopleSoft Supply Planning uses these policies until you publish them.

Defining Policy Simulation Parameters

This section provides an overview of simulation parameters, lists common elements, and discusses how to:

Define order quantity values for policy simulation.
Define safety stock values for policy simulation.
Define reorder point values for policy simulation.
Define minimum and maximum values for policy simulation.
Define other data values for policy simulation.

Understanding Simulation Parameters

Simulation parameters are the different policy options and methods that you can apply to policy items. When you generate an inventory policy and create new items, either the default policy control group that is assigned to the policy set or a policy control group that is selected during the generation process determines policy parameters, such as the order quantity, reorder point, or static values, that will be used for the newly created items.

Typically, the parameters that you establish in this default control group are general in nature and provide a safe policy for an item. A safe policy provides some value for ordering and safety policies for the new item. These parameters are a safe policy solution when you generate the policy, but not necessarily the optimum solution for the item's inventory efficiency.

Using simulation options, you can fine-tune the policy to simulate what values are required to reach the organization's inventory goals. For example, if you know that you can improve the forecast accuracy, you can project how the forecast will affect the inventory policy by lowering the simulated forecast error.

Note. When you perform the initial search, you can also limit policy items that appear on this page by the turn rate or service fill.

Common Elements Used in This Section

Control Group

Displays the group that is associated with the item when you perform a simulation. A policy control group contains a set of default policy methods and arguments. To change all of the parameters at once and simulate a new policy, select a different policy control group. Only those control groups that are currently established and assigned to the policy set are available for selection.

If you are working with items that were created when the policy was generated, the system automatically applied control group values to the item. You can update these values to fine-tune the policy.

Lead Time

Enter the number of days that are required to replenish an item from its source, either the vendor or supplying location. The time begins when a replenishment need is identified and ends when the item is available to ship to a customer. Changing the lead time when you run a simulation enables you to see its effect on the item's policy. The system always measures lead time in days.

Pages Used to Define Simulation Options

Page Name	Definition Name	Navigation	Usage
Order Quantity	DP_POLICYSIMOQ	Inventory Policy Planning, Process Policy, Simulate Policy, Order Quantity	Define or review order quantity parameters for a policy item.
Safety Stock	DP_POLICYSIMSS	Inventory Policy Planning, Process Policy, Simulate Policy, Safety Stock	Define or review safety stock parameters for a policy item.
Reorder Point	DP_POLICYSIMROP	Inventory Policy Planning, Process Policy, Simulate Policy, Reorder Point	Define or review the reorder point parameters for a policy item.
Minimum/Maximum	DP_POLICYSIMMM	Inventory Policy Planning, Process Policy, Simulate Policy, Minimum/Maximum	Define or review the minimum and maximum inventory level parameters for a policy item.
Other Data	DP_POLICYSIMOTH	Inventory Policy Planning, Process Policy, Simulate Policy, Other Data	Define or review miscellaneous parameters, such as static values, for use when simulating a policy.

Defining Order Quantity Values for Policy Simulation

Access the Order Quantity page (Inventory Policy Planning, Process Policy, Simulate Policy, Order Quantity).

Order quantities control how the system calculates quantities that it uses to replenish inventory items. When setting policies for items, it's better to begin with the order quantity and order multiples. These elements have a major effect on the efficiency of the inventory system and are important in establishing a benchmark for the item's policy.

After establishing a benchmark, you can fine-tune the item's policy by making adjustments to other parameters, such as safety stock or reorder points, and then simulating the results.

Use the Method and Upper-Lower Limits group boxes to establish simulation values for the order quantity. Use the Order Multiples field to define the order quantity rounding that the system uses in its calculation. In most cases, the system calculates the order quantities in increments of the order multiple.

Method

To define simulation values in this group box, select an order method and, where applicable, enter an argument for the method. When the system calculates the entries, the new values appear in the Simulated Order Quantity fields in the simulation. The system also displays the current and simulated orders for the year.

Upper-Lower Limits

To define simulation values for fields in this group box, select the method that you want to use and enter the upper and lower limits.

Usage

The Days Supply method calculates the order quantity based on the daily forecasted demand that would be experienced over the number of days that you enter in the argument field. You can use upper and lower limits of Fixed Quantity with Days Supply so that you can constrain the quantity that you require during a certain number of days to a value that is equal to or greater than the OQ (order quantity) lower limit. For example, the value might represent a supplier's or manufacturing minimum quantity. You further limit the value using the OQ Upper Limit field, such as a supplier's truckload quantity. Any quantity that the system calculates is in incremental quantities of the order multiple.

The Fixed Quantity method provides for a fixed value that doesn't change due to variation in demand. The system doesn't constrain quantities for this method with upper or lower limits, nor must the quantities be an increment of the order multiple.

The EOQ (economic order quantity) method calculates the order quantity to minimize the combined costs of acquiring and carrying inventory by adding the item's forecasted demand, ordering cost, carrying cost percentage, and unit cost. An argument value isn't required. You can use upper and lower limits of Days Supply or Fixed Quantity with the EOQ method. Quantities that the system calculates are in incremental quantities of the order multiple.

The Lot for Lot method calculates the order quantity to match the net requirements of that period. The result is sometimes referred to as a discrete order quantity. An argument value isn't required. You can use upper and lower limits of Days Supply or Fixed Quantity with Lot for Lot. Quantities that the system calculates are in incremental quantities of the order multiple.

Defining Safety Stock Values for Policy Simulation

Access the Safety Stock page.

Safety stock values control how the system calculates quantities for the buffer inventory of policy items. These values are also a means of fine-tuning inventory costs versus service performance by increasing or decreasing the amount of safety stock. Generally, for items that have shorter lead times and consistent demand, you have more flexibility to reduce cost by lowering the safety stock level.

On the other hand, for items that have long lead times and inconsistent demand, you might have to carry greater safety stock to meet higher service requirements. Using policy simulation, you can fine-tune these policies to determine how much safety stock you need to meet higher service requirements and what the cost will be to maintain that level.

You use the Method and Upper-Lower Limits group boxes to establish simulation values for safety stock.

Method

To define safety stock simulation values in this group box, select a safety stock method and, where applicable, enter an argument for the method. When the system calculates entries, the new values appear in the Current and Simulated Safety Stock fields in the simulation. The system also updates current and simulated safety stock levels for the year.

Upper-Lower Limits

To define safety stock simulation values for fields in this group box, select the method that you want to use and enter the upper and lower limits.

Usage

The Days Supply method calculates the safety stock based on the daily forecasted demand that would be experienced over the number of days that you enter in the Argument field. You can use an upper-lower limit of Fixed Quantity with Days Supply to prevent safety stock from going below the lower limit during periods of sporadic or no demand. It also prevents safety from exceeding the upper limit that might represent, for example, a financial or warehousing restriction.

The Fixed Quantity method provides for a fixed value that doesn't change due to any variation in demand. This method isn't constrained by lower or upper limits.

The Percentage Demand Fill method calculates safety stock quantity based on the demand and the forecast error of the item. You can use upper and lower limits of Days Supply or Fixed Quantity with percentage demand fill.

The Percentage Cycles Without Shortage method calculates safety stock quantity so that a percentage of inventory cycles can occur without creating an inventory shortage. You can use upper and lower limits of Days Supply or Fixed Quantity with percentage of cycles without shortages.

The Maximum Lead Time Usage method calculates the safety stock based on demand history. The level is set to the maximum usage that is likely to occur during the item's lead time. To determine how the system calculates the usage, use the maximum historical usage parameter. An argument isn't required. You can use upper and lower limits of Days Supply or Fixed Quantity with maximum lead time usage.

Defining Reorder Point Values for Policy Simulation

Access the Reorder Point page.

A reorder point is the inventory level where, if the total quantity on hand falls to or below that point, the system replenishes the stock. The system does not consider if more inventory is required; it automatically recommends the order to maintain a certain inventory level. You can reduce the possibility of using safety stock by using the Lead Time Demand or Lead Time + Safety Stock method.

Enter a method and argument to set up reorder points for policy simulations. PeopleSoft Supply Planning doesn't use reorder points from PeopleSoft Inventory Policy Planning.

Method

To define reorder point simulation values in this group box, select a reorder point method and, where applicable, enter an argument for the method. When the system calculates entries, the new values appear in the Current and Simulated Reorder Point fields in the simulation. The system also updates current and simulated reorder point levels for the year.

Usage

The Days Supply method calculates the reorder point based on the daily forecasted demand that would be experienced over the number of days that you enter in the argument field.

The Fixed Quantity method provides for a fixed value that does not change due to any variation in demand.

The Lead Time Demand method calculates the daily forecasted demand for the same number of days as reflected in the Lead Time field.

The Lead Time plus Safety Stock method calculates the daily forecast demand for the same amount of days as reflected in the Lead Time field in addition to the value of the safety stock.

Defining Minimum and Maximum Values for Policy Simulation

Access the Minimum/Maximum page.

Minimum and maximum settings help you monitor and analyze item quantities. This policy doesn't physically control the level of inventory; it provides comparison displays in the simulation that show you if minimum and maximum values have been reached.

While simulated minimum and maximum values do not provide a hard inventory constraint, they do provide you with a means of reacting to stock conditions. For example, if stock is nearing the minimum level, you can ensure that an order has already been placed. Or, if stock is going above the maximum level, you can ensure that you have the warehouse space to handle the overage.

Method

To define minimum and maximum simulation values in these group boxes, select a method and, where applicable, enter an argument for the method. When the system calculates entries, the new values appear in the Current and Simulated Minimum and Maximum fields in the simulation.

Usage

The Days Supply method calculates the minimum or maximum level based on the daily forecasted demand that would be experienced over the number of days that you indicate in the Argument field.

The Fixed Quantity method provides for a fixed value that doesn't change due to any variation in demand.

The Safety Stock method populates the calculated safety stock level as the minimum level.

The Safety Stock Plus Order Quantity method populates the sum of the calculated safety stock and calculated order quantity as the maximum level.

Defining Other Data Values for Policy Simulation

Access the Other Data page.

Static Calculation Method

Select an option to use for policy simulation. The system uses static calculations when it calculates policies for PeopleSoft Inventory that recognizes only a single, fixed value for each parameter. Static calculations produce a single value from the time-phased results. PeopleSoft Supply Planning uses the time-phased results from Inventory Policy Planning.

Enter a value as an argument. The value that you enter indicates either a specific period number if you select Period Number or a group of periods if you select Periods to Average.

The period number is in relationship to the current period and year. If you want the static value to be based on next month's (instead of the current month's) time-phased result, select 2. Using the Periods to Average option provides a static value that is the average of the periods that you select. If you select 3 as the periods to average, the time-phased results from the current period and the system averages or smooths the next two periods. This is important with seasonal items or with items that experience erratic demand where a single period may have a zero demand value. When that value is 0, then dynamic policies, such as Days Supply or percent demand fill, can also result in a zero demand value.

Establish default values for static data using the policy control group and the policy item.

EOQ Parameters

If you are using the EOQ method, you should maintain the Carrying Cost % (carrying cost percentage) and Ordering Cost fields. The system uses the EOQ method calculation to establish an order quantity that minimizes the cost of processing and carrying inventory. You can maintain these values using policy control groups and inherit the values from the group. You can also override carrying cost and ordering cost values at the policy item level.

Maximum Historical Usage

The Lead Time Percentage Usage field is for informational purposes only. The system uses the value if you have set either the safety stock or the minimum method to use the Maximum Lead Time option. The system bases setting the safety stock or minimum to a constant value (the same for all periods) on a review of the historical demand over the number of historical periods.

Forecast Error

The initial simulated value appears by default from value currently set on the policy item. Enter a value in the Simulated Forecast Error field to simulate how improving or reducing the accuracy of the forecast affects the item's inventory policy.

Forecast errors can have a direct effect on inventory policies. For example, high forecast errors on expensive items drives toward higher safety stocks and results in a higher inventory investment.

You can simulate an adjustment to the forecast error when you find that a forecast might be inaccurate due to the forecast model or simply when you receive more accurate information. Where the forecasts are poor (high forecast error), PeopleSoft Inventory Policy Planning compensates by suggesting higher safety stocks. On the other hand, an improvement in the forecast error results in lower safety stock and, in turn, reduces overall inventory investment.

See Also

Defining Other Data for Policy Items

Viewing Simulated Inventory Policies

This section provides an overview of policy simulation, lists common elements and discusses how to:

View policy simulations in a table format.
View policy simulations in a chart format.
View current policies.
View simulated policies.
View simulation parameters for current and simulated policies.

Understanding Policy Simulation

Simulated item inventory policies are those item policies for which you have either used default parameters or entered new parameters and then used the Calculate button to simulate the policy.

When you produce, modify, and then reproduce a simulation, you can compare certain values that the system produces for each simulation. In addition to comparing values between simulations, you can change the control group interactively to incorporate existing group values for use in the simulation.

You compare policy values according to the current policy, the existing simulation, and the previous simulation if more than one simulation has been made. For example, you can review the current policy, change it, and create a simulated policy. Then you can create another simulation and compare it to the first simulation and the current policy. After you arrive at simulated results that meet the business needs, you can apply that simulation as the new policies for that item.

Note. All simulation values are expressed in the unit of measure that is defined for the policy item.

Common Elements Used in This Section

Apply	Click to apply the simulated policy values to the item. The system does this immediately. After you apply the new policy and want to make policy changes, you can define and apply a new set of parameters to the item. If you use item maintenance to change the parameters, then the result of those changes do not take effect until you run simulation against that item and applied that simulation or run policy generation using the Update Policy check box.
Average Inventory	Displays the average inventory levels for the period. The system calculates this value using either the current or the simulated inventory policy. The average inventory calculation is one half of the order quantity plus the safety stock.
Calculate	Click to calculate policy values for the policy set and item you selected.
Chart	Click to view graphical data for an item's policy. The system charts data for each period and by safety stock, average inventory, and safety stock plus order quantity.
Current	Click to view the current inventory policy for the item that you selected.
Current Order Quantity	Displays the recommended order quantity for any inventory replenishments that are necessary during the period. The system bases the value on the current inventory policy.
Current Safety Stock	Displays the amount of safety stock that is required for a policy item during a period. The system bases the value on the current inventory policy parameters. This value appears on the Tables and Simulated pages.
Current Service % Fill (current service percentage of fill)	Displays the service level that is predicted to occur during a period for the current inventory policy.
Forecast Value	Displays the forecasted quantity demand for a policy item during a period. Where applicable, this includes any dependent forecast quantity. If the forecast and inventory policy periods are different, the system converts the forecast quantity using calendar demand weights. You cannot adjust forecast values for inventory policy. You can adjust the forecast error rate.
Maximum	Displays the maximum stock level. If a maximum hasn't been defined on either the policy control group or as a simulation option, a 0 appears in this field.
Minimum	Displays the minimum stock level. If a minimum hasn't been defined on either the policy control group or as a simulation option, a 0 appears in this field. You use minimum and maximum quantities as comparisons with other current or simulated values to determine if the inventory level is near or has exceeded an upper or lower quantity.
Parameters	Click this link on any simulation page to view the parameters you entered for the simulation.
Period	Displays the periods that hold time-phased information. The system determines the contents of the column by the maximum number of periods and the start period that is defined for the policy set.
Reorder Point	Displays the inventory level that triggers a reorder request during this period.
Return	Click to return to the simulation parameters and define a different set of item policy parameters for the simulation.
Simulated Order Quantity	Displays the recommended order quantity for any inventory replenishments that are necessary during a period for the simulated policy parameters.
Simulated Safety Stock	Displays the amount of safety stock that is recommended for a policy item during a period. The system bases the value on the simulated policy parameters that you entered.
Simulated Service % Fill (simulated service percentage of fill)	Displays the service level that is predicted to occur during a period for the simulated inventory policy parameters that you entered.
Tables	Click this link on any simulation page to view the current and simulated policy values by period. You can also view simulated static data and cost and investment values. To access the Simulation Results pages, click the Calculate button on any of the Simulation Parameters pages.
Turn Rate	Displays the number of times that the inventory will turn over (be replaced) for either the current or the simulated inventory policy in the calendar year. The system calculates the turn rate by dividing the average inventory level by the annual demand. For example, if the average inventory is two million units and the annual demand value is 20 million units, then the turn rate is 10 times per year.
Simulated	Click to view simulated data based on the parameters that you entered.

Pages Used to View Inventory Policy Simulations

Page Name	Definition Name	Navigation	Usage
Tables	DP_POLICYSIMRES1	Inventory Policy Planning, Process Policy, Simulate Policy Click the Calculate button on any simulation parameters (Simulate Policy) page.	Displays time-phased values for order quantity, safety stock, and service level; a set of static targets; and the cost effects of the current policy and the last two simulations.
Chart	DP_POLICYSIMRES2	Click the Calculate button on any simulation parameters (Simulate Policy) page. Then click the Chart link on the simulation results page.	Displays simulated inventory policies graphically.
Current	DP_POLICYSIMRES3	Click the Calculate button on any simulation parameters (Simulate Policy) page. Then click the Current link on the simulation results page.	Displays current inventory policy values for an item.
Simulated	DP_POLICYSIMRES4	Click the Calculate button on any simulation parameters (Simulate Policy) page. Then click the Simulated link on the simulation results page.	Displays simulated inventory policy values for an item.
Parameters	DP_POLICYSIMRES5	Click the Calculate button on any simulation parameters (Simulate Policy) page. Then click the Parameters link on the simulation results page.	Displays the current and simulated methods and arguments for each of the policy parameters.

Viewing Policy Simulations in a Table Format

Access the Tables page (Inventory Policy Planning, Process Policy, Simulate Policy, and click the Calculate button on any simulation parameters (Simulate Policy) page).

Initially simulation results appear on this page. Compare the current time-phased and static policy values with those that have been simulated. The system makes comparisons on a period-by-period basis for time-phased data, periods defined for static value, and annual cost effects of the policy.

Note. You must click the Calculate button to simulate an item policy and access this page.

After you review the simulations, you can either click the Return link to go back to the simulation parameter settings to redefine the simulation or click the Apply button to update the inventory item's policy with the newly defined parameters.

On the page:

The upper grid displays the current and simulated policy values for each planning period.

The forecasted quantities from Oracle Demantra Demand Management appear for each period.
The middle grid displays current static values and those that you defined using simulation parameters on the Other Data page.

Use these values instead of time-phased values when publishing policies to PeopleSoft Inventory.
The lower grid displays the cost effects of the current policy and of the last two simulations.

Using cost elements in simulation, you can analyze how to reduce the cost of maintaining inventory.

Simulating Static Values

Static values are values that do not use time-phased data and that the system exports to PeopleSoft Inventory. The system calculates the simulated values based on changes that you make on the Other Data page. The Static Values display area contains both the simulated and current policy values for safety stock, order quantity, and service fill. The system exports time-phased data to PeopleSoft Supply Planning.

The system also calculates static values for other inventory elements. Use the Current and Simulated links to view static values for the reorder point, average inventory, turn rate, and minimum and maximum values.

Simulating Cost Effects

Provides an overview of the expenses that are associated with keeping an item in inventory.

Annual Cost	Displays the current policy value. As you perform additional simulations, this value remains the same. The annual cost is a combination of the annual carrying cost (average quantity multiplied by the item's carrying cost percentage and its static standard cost) and the annual reorder cost (order count multiplied by order cost). During simulation, you might consider options for reducing the item's ordering and carrying costs, which are significant factors in inventory expenses. For example, the labor cost of moving inventory from bin to bin, warehouse maintenance, and insurance add to the cost of carrying, ordering, and replenishing an item. Making changes to any of these cost factors and then simulating those changes affects the annual cost. Because the average quantity is a major factor in the calculation, you can see significant results when attempting to reduce the order quantity or safety stock levels. Use the Carrying Cost field on the Other Data page for defining simulation parameters to simulate changes in the annual cost of an item.
Orders per Year	Displays the number of orders that are required per year as a result of the current, simulated, or last simulated policies. Because processing and handling orders can be costly, you look for ways to reduce this number. You can do this by reducing order quantity, but this must be balanced with the cost of replenishing or ordering the item.
Investment	Displays the average inventory investment that is required for the year. The system calculates this value by multiplying the average inventory level by the static standard cost.
Current	Displays the current quantities for annual costs, orders per year, and investment. These values are contained on the item's policy. If you click the Apply button, values from the Current Simulated field replace these values.
Last Simulated	Displays the simulated results for the previous simulation. Use this field to track cost data when you are making several adjustments to simulation options. If previous simulations have not been performed, the field is blank. Remember that when you click the Apply button, the system uses policy parameters from which the values in the Current Simulated field were derived to update the item's policy.
Current Simulated	Displays the simulated results from the current or active simulation that you are performing. The system determines these values by the policy parameters that you define for the simulation and applies the values to the item's policy when you click Apply.
% Change (percentage of change)	Displays the percentage difference between the values in the Current and Current Simulated fields. A minus sign indicates that the current value is lower than the current policy value.

Viewing Policy Simulations in a Chart Format

Access the Chart page (click the Calculate button on any simulation parameters (Simulate Policy) page, then click the Chart link on the simulation results page).

Inquiry charts show inventory policy quantities for items. The system graphs all data using the base unit of measure and simulated data values.

The system displays each type of policy in a different color. The total number of historical and future periods on the policy set controls the number of periods during which you can graph data.

The policies that appear on the Chart page are fixed.

Safety Stock	Graphs the quantity of inventory needed to buffer the variation of the forecast over the lead time for the item. This is also referred to as the minimum inventory level.
Average Inventory	Graphs the calculated average inventory quantity for the item across the number of periods.
Safety Stock + Order Quantity	Graphs the quantity of inventory that is needed to buffer the variation of the forecast over the lead time plus the recommended order quantity for any inventory replenishments that are necessary during the period. This is also referred to as the maximum inventory level.

Viewing Current Policies

Access the Current page (click the Calculate button on any simulation parameters (Simulate Policy) page, then click the Current link on the simulation results page).

Only quantities for the current policy appear on this page. The system calculates time-phased values and displays them in the Static Values display area. You use the Other Data page to select the static calculation method. To access the page, select Return, Other Data.

Viewing Simulated Policies

Access the Simulated page (click the Calculate button on any simulation parameters (Simulate Policy) page, then click the Simulated link on the simulation results page).

Only quantities for the simulated policy appear on this page. The system calculates time-phased values and displays them in the Static Values display area.

Viewing Simulation Parameters for Current and Simulated Policies

Access the Parameters page (click the Calculate button on any simulation parameters (Simulate Policy) page, then click the Parameters link on the simulation results page).

You can compare the current policy parameters to the parameters that you defined for the simulated policy. If you didn't define a parameter on the control group and didn't enter one as a policy simulation parameter, the field for that parameter appears blank for the Simulated columns.