
Effective Change Status Selection
Purpose
If you have assigned values to effectivity parameters, the system determines a development status as described below.
An object (such as a BOM item) can be subject to several changes with reference to different change master records throughout its total life cycle. In practice, it may be the case that several change master records fulfill the parameter variant at the same time. In order to determine just one change status for the object, the system has to decide in the operational areas (for example, material requirements planning) which change status should be selected.
Process Flow
This decision is made according to the following rules:
If a change master record was created without a release key, the change statuses generated with it are released for all areas.

For example, the BOM for material M1 has been processed using two change master records (effectivity type: serial number).
Change Number |
Serial Number Interval |
N-3108 |
SN003 - SN200 |
N-3109 |
SN201 - SN300 |
If you enter material number M1 in a sales order item and assign the value "SN099" to the serial number effectivity parameter, the system picks out change master record N-3108.
The system determines the change status that was generated with reference to the change master record with the highest priority.
If there are change statuses with date effectivity (valid-from date) as well as parameter effectivity (for example, serial number interval) for an object, the changes with parameter effectivity have a higher priority.
If you have not entered a rank in a change master record, it then has a lower status than change master records in which a rank has been maintained.

If you override a parameter variant by setting a change number as valid, the system selects the change status that was generated using this change number.
This operation can be repeated throughout any number of levels in a multi-level BOM.

If you change the effectivity criteria in a change master record and then create a new parameter variant, the system determines the change statuses according to the new criteria.