Managing and tracking changes > Using ECNs and MCNs
Unset a change notice
You can unset a manufacturing change notice (MCN) on a bill of process (BOP) or manufacturing bill of materials (MBOM) structure to stop capturing changes.
Procedure
In Manufacturing Process Planner, select the structure that contains the change notice to be unset.
Select the top line of the structure and choose Tools→Change Management→Unset Change Notice.
The change notice is removed from the structure window header.
Source: https://docs.sw.siemens.com/en-US/doc/282219420/PL20251212545240207.mse/xid1175806 · retrieved 2026-07-11