Changes with Effectivity

Use

You can use change numbers that have effectivity to make changes that depend on specific parameters, such as customer or serial number, to characteristics, the characteristics of a class, and classifications. You can define effectivity types in Customizing for Engineering Change Management.

Maintenance Values

In the change master record, you define the status on the basis of which changes are made with this change number. For example, changes made to characteristic COLOR with change number CHG_02 are based on the status for customer SMITH. This status determines which "maintenance values" apply.

You must enter a parameter value, because parameter effectivity does not provide a chronological sequence for determining the effective status.

Validity Periods

You can use either valid-from dates or effectivity type DATE to define validity periods for objects.

Only use effectivity type DATE in combination with other effectivity types, such as CUSTOMER.

If you want to work with validity periods only, use valid-from dates.

Changing Objects with Effectivity

If you work with change numbers that have effectivity in the classification system, you can enter a change number and a date.

Caution Caution

The date you can enter in addition to the change number is a selection date. The effective status is selected according to the change number and date you enter – for example, the status for customer SMITH on January 1, 1999.

Any changes you make are stored for the change number, not the date.

End of the caution.

The system uses the change number and selection date you enter to determine the effective status of objects.

If the objects have only been processed with change numbers that have date effectivity, you see the change status that is effective on the date you entered.

If the objects have been processed with change numbers that have date effectivity and change numbers that have parameter effectivity, the parameter effectivity has a higher priority than the date effectivity. If no effective status with parameter effectivity is found, the system uses the date to find an effective status.

Note Note

When you use the date to search, change numbers that have effectivity type DATE (time period) have a higher priority than change numbers that have time effectivity (valid-from date). This still applies if the change number that has effectivity type DATE represents an older change status than the change status with a Valid-from date.

End of the note.

Creating Characteristics, Classes, and Classifications with Effectivity

Do not create master data such as characteristics and classes with a change number that has an effectivity type, because it may not be possible to determine the effective status if you call the object with another change number (see Characteristics (Example) ).

For this reason, only use engineering change management to change existing master records.

Displaying Characteristics, Classes, and Classifications

When you display characteristics, classes, and classifications, you can choose Parameters to enter parameters for selecting the relevant status of objects. For each parameter, you can only enter a single value, not multiple values or intervals.

Note Note

You want to display the status of a classification for customer SMITH. When you display the classification, enter customer SMITH as a parameter.

You cannot display the status for customers SMITH and MEYER at the same time.

End of the note.

Finding Objects

When you search for classified objects, you enter parameters to determine the status of objects that you want to see. You can enter a date as well as parameters.

Prerequisites

You can only use change numbers with effectivity to process classifications if the ECH (parameter) indicator is set in Customizing for the class type.

Before you can set this indicator for an existing class type, you must use report program RCLAUSPT to prepare classification table AUSP for each class type.

Once you have run the report program, the ECH (parameter) indicator is available for entry for the class type in Customizing for the Classification System. You can only set this indicator if the ECH (time) indicator is set.

See also:

SAP Library LO Engineering Change Management