Creating PIRs for Characteristics Planning 

Purpose

When creating or changing the planned independent requirements for configurable materials, the quantities and dates of the planned independent requirements and the usage probabilities are maintained individually per date and quantity.

When maintaining usage probabilities for the combination value keys of a characteristic, note the following:

Characteristics that only allow a simple valuation (also restrictable characteristics)

The sum of usage probabilities of the combination value keys must be 100%.

Example: The CPU is a required component of a PC. This means that you must have the same number of CPU boards and PCs.

The sum of the usage probabilities do not have to be 100%. The difference is assigned to the formal characteristic value Non-valued.

A modem is an optional component of a PC. The usage probabilities for two combination value keys Modem = 14 Kbaud (30%) and 28 Kbaud (35%) are 65% of the PCs. The remaining 35% have no modem (Modem = non-valued).

Characteristics that allow multiple valuation

Several values can be assigned to this type of characteristic at the same time. Characteristic values do not mutually exclude each other. The sum of usage probabilities can exceed 100%.

To create characteristics that allow multiple valuation, choose Logisitics ® Central Function ® Classification ® Characteristic ® Create. On the Create Characteristic: Basic Data screen in the Entry Control group box, select Entry Required. Then choose Extras ® Format. In the Value Assignment group box, select Multiple Values.

The characteristic ‘extras’ (EX) for the PC can have the values ‘co-processor for graphical applications’, ‘sound card’ and ‘proshare’. A sales order for a PC could have the characteristic values EX = sound card and EX = proshare. You can enter the following configuration percentages: EX = Co-processor 60%, EX = sound card 70%, EX = proshare 30 %.

Required characteristic:

The sum of the usage probabilities of the combination value keys must be at least 100%. It can exceed 100%.

Characteristic values that are not specified in the percentage configuration are considered to have a low usage probability. You cannot specify negative usage probabilities. No characteristic value can have a usage probability over 100%.

If the sum of the usage probabilities for a characteristic do not fulfill the conditions described above, the system displays a warning (inconsistency) on the maintenance screen. The configuration can be accepted, however. The system forces you to change your entries if the usage probabilities are negative.

Performing Consistent Distribution of Usage Probabilities Automatically

If the sum of the usage probabilities for a characteristic is inconsistent, you can instruct the system to distribute the usage probabilities consistently in the Configuration supporting points dialog box using Automatic consistency.

The relations between the usage probabilities of the characteristic values are constant and the absolute values are adjusted to add up to 100%.

The CPU of the PC only allows simple valuation. The usage probabilities, CPU = 386 30%, CPU = 486 90%, CPU = P6 30%. As the sum of the usage probabilities must be 100% not 150%, all usage probabilities are multiplied by the factor 100/150 = 2/3. This produces the following results, CPU = 386 20%, CPU = 486 60%, CPU = P6 20%

Only usage probabilities that are not fixed are included in the automatic correction. Fixed values are protected from automatic changes.

When maintaining usage probabilities, the absolute values are adjusted according to the above-mentioned relationship of the usage probabilities. When maintaining the quantities, the values are rounded according to the unit.

Prerequisites

To maintain usage probabilities, the following are mandatory:

Procees Flow

SAP recommends the following procedure for maintaining usage probabilities:

When creating the planned independent requirements, all scheduled dates are proposed for processing.

When changing the planned independent requirements, only scheduled dates given values when they are created appear.

To see all dates in the configuration table, select all schedule lines on the Planned Independent Requirements: Schedule Lines screen.

See also:

Processing Configuration Supporting Points