Changes With History
Changes With History
You can carry out a change with history with reference to a change master. This means that you can:
You enter an effectivity based on time (valid-from date) in the standard system. You can also make changes irrespective of dates or time. These changes become effective under other conditions (for example, serial number effectivity).
The change object (for example: bill of material) is stored twice: in its state before and after the change. The new data records that are created when you make a change are saved by the system in the original object.
In the standard system, the state of the object before the change ends with the valid-to date. The state after the change begins with the valid-from date.
Exceptions:
The new data records that are created when you make a change are saved by the system in a change document.
The system saves the change number in the document info record. Changes to the document info record are saved in change documents.
If you foresee making fundamental changes to the document info record, then you should create a new version with reference to a different change number.
If you define the effectivity using parameters and not the valid-from date, the parameter values determine under which conditions the change becomes effective.
The following graphic shows the information that you must maintain in the change master record:
