Executing Simulative Rules-Based Availability Checks (SAP Library - SAP Advanced Planner and Optimizer (SAP APO))

Executing Simulative Rules-Based Availability Checks

Use

You use the data in APO to simulate a rules-based availability check.

Prerequisites

You maintained the general settings for Global ATP.

You maintained the settings for the rules-based availability check.

Procedure

From the SAP APO screen choose Global ATP à Reporting à ATP Simulation.

You branch to the APO Availability Check: Simulation: Initial Screen.

Enter the relevant check data.

In this field...	Enter...
Product	a product number
Location	a plant or production planning area
A sublocation	a sublocation
Version	The version reflects the differences of a product in various forms. For example, the batches in the R/3 System are displayed in APO as product versions.
Check mode	Check mode To simulate a rules-based check, you must have previously entered a corresponding, valid check mode and activated rules-based ATP in the check instructions. You must also enter the check mode (also for the subsequent requirements) in the location-specific product master.
Business event	a business event
With reqmt qties	If you have set the With reqmt qties indicator in the initial screen, the system carries out the check taking the requirement quantities into account, not the confirmed quantities. This enables you to simulate the creation mode when checking requirements whose ATP groups have cumulation type 2 or 3.
Date/Quantity	Specify the date the ATP check should use. Transportation and shipment scheduling is carried out depending on this date. If you carry out a simulation, you branch to a dialog box that contains all fields of the field catalog for transportation and shipment scheduling (/SAPAPO/KOMGU). To carry out transportation and shipment scheduling you must have maintained the settings in Customizing for the Advanced Planner and Optimizer via Global ATP ® Transportation and Shipment Scheduling. For further information see Transportation and Shipment Scheduling.
Requirements quantity	Requirements quantity If you do not specify the requirements quantity, the system carries out a simulative check using the maximum quantity.
Unit	a unit of measure

Choose Program à Execute.

The Characteristic Values for a Rules-Based Check (Simulation) dialog box appears.

Enter the activation parameter and values that should be taken into account during the current simulation.

Note: you must enter the values in the same manner as they are copied from the OLTP system.

Example :

OLTP: Production plant: 1000

APO: Location: PL1000@SysClnt

You enter the characteristic value 1000 in this example.

Choose (Start simulation).

Results

The results display depends on how the check was carried out. If a requirement quantity, which is available according to the basic methods, was required for the simulation, it is also displayed in APO Availability Check: Confirmation Proposal screen.

This screen is also generated if no valid rules were found. In this case, only the availability of the entered location product, based on the basic methods that you chose, was checked.

Hierarchical Results Display (Simulation)

The result is displayed hierarchically in a new screen (APO Rules-Based Availability Check (Simulation)). The APO Availability Check: Hierarchical Display (Simulation) screen is empty at first.

After the generation of the results tree, you see the original requirement, the requirement item, the requirements schedule line as well as the substitution results in the hierarchically ordered requirements groups (column 1). The product and location are displayed per requirement item. An indicator for the check results, the requirements date (column 2) and the requirement quantity (column 3) is displayed per requirement schedule line.

See also:

Reactions to rules-based ATP

You can call many functions from the APO: Rules-Based Availability Check (Simulation) and the APO: Availability Check: Hierarchical Display (Simulation) screens.

Choose...	if...
	you want to display the availability overview.
	you want to display the confirmation proposal.
	you want to display the relevant data for the location products. A list display is displayed per requirements group.
	you want to display the rule in the integrated rule maintenance. You can evaluate the rules there.
	you want to analyze the conditions. Condition types and other information about accessing condition records is displayed. Details about the condition type are displayed here.
	you want to display the legend. The explanation for the confirmation status and for the functions is displayed.
	you want to maintain the settings for the hierarchical display. The changes are user-specific and only take effect after the simulation is called again. Essentially, every manual change in screen size and column width is saved as a default setting. However, if you want to activate the hierarchical display in the standard layout (the predefined layout from the system) after you have called another simulation, choose the Standard radio button in the Size and column width section. Every subnode is expanded when generating the hierarchical display (default). You can choose Do not expand subnodes in the Hierarchical display frame, if you want to override this default setting. The width of the first column is determined by the system. The width can be adjusted only if the Do not expand subnodes mode is active (that is, after a call is made in this mode)
Alert Monitor	you want to display shortage situations in the Alert Monitor.

See also:

Rules-Based Availability Check

Settings for the Rules-Based Availability Check