This scope item covers two central PLM BOM processes: setup and release steps for change master controlled Engineering BOM, and change iteration.
The change-number-controlled approach allows date-effectivity-based attributes management on the Engineering BOM (EBOM) header level and the Bill of Materials (BOM) items level. Setting the change number status to inactive releases the scope per change number. Once the status becomes inactive, changes are no longer possible. The EBOM header and items can only be changed with a new active change number. The change iteration process starts and ends again with setting the change number status to inactive. The process distinguishes between major changes of the BOM where it has been copied or created newly and minor changes where the BOM is being changed.