Formula parameters are used in formulas for capacity planning, scheduling, costing, PRT management and determining standard values using CAPP.

A formula parameter is identifeied by a ** parameter
ID**. Every formula parameter is linked with a
particualr field either in Customizing, the routing or the work
center. When the formula is evaluated the parameter takes the value
of the field.

**Origin of Formula Parameters**

The assignment of a formula parameter to a data field is defined
in the ** origin** . You can refer to the data
field in the work center or the routing via the

**Standard Value**

Using the
**standard
value key** you provide the work center, and thus the
routing, with up to six formula parameters that you assign values
to in the routing operation.

**Work Center Constant**

In the work center you can assign up
to six work center constants a value and an unit.

**General Formula Constants**

You can assign general formuula
constants a value and an unit in Customizing formula
parameters.

**General Operation Value**

The formula parameter is assigned to
a data field in the general operation data, for instance the lot
size or the base quantity. In this case you have to explicitly
enter the **field name** .

**User-Defined Field from Operation**

The formula parameter is assigned to
an user-defined field in the operation. In this case the the
assignment of the formula parameter is controlled by
**user-defined
field key**, that you define in Customizing the work
center. The key words that describe the data fields are not defined
in the formula parameters, but in the user-defined field key.

**Value from PRT Allocation**

You assign the formula parameter to a
field in the PRT alloaction, for instance the PRT quantity.

**PRT constant**

You assign the formula parameter a
fixed value in the PRT master record.This formula parameter can
only be used for PRT management.

**Note:**

You enter the meaning of the fields in the key words for work
centers and routings and **not** in the field
names.

Please note that this step is the prerequisite for the step
**Define rounding
categories and additional values key** in Customizing
for CAPP standard value calculation.

If you want to use the parameters in formulas you should use descriptive parameter IDs.

- The value that you enter in the
field is only used to check the syntax of the formula (apart from general formula constants). The system does this automatically when you create a formula in Customizing. You should maintain this field, specially if a formula parameter is used as a divisor in a formula. Similiarly the*std. value*field is only used for checking purposes.*Standard value unit*

Actions

1. Define your formula
parameters.

2. Check the assignment of the
formula parameters to the standard value keys.

3. Check the use of the formula
parameters in formula definitions.