General configuration and customizing tasks
Configure manufacturing change notices (MCNs)
An engineering change notice (ECN) records engineering design changes to a product. Manufacturing change notices (MCNs) are essentially ECNs that are specifically intended for manufacturing rather than engineering needs. An MCN is not a COTS (commercial-off-the-shelf) object and can be any custom change notice revision that overrides the following business object constants.
As an administrator, you can modify the constants as shown.
Note
MCN capabilities require a special license and installation to work in Teamcenter. After installation, set the MEMCN_management_enabled preference to true to enable change notice revision commands in Manufacturing Process Planner.
To allow users to set statuses on an MCN, change notices must have valid release statuses defined in the MEMCN_release_statuses preference.
You can make change notices mandatory before users may edit certain types of structures. To configure such types of structures, adding the item type of the structure's top line to the role-based MEMCN_change_notice_mandatory_types preference.
Example
Process
Mfg0MEPlantBOP
Use the MEMCN_release_revision_mode preference to control how statuses are created on item revisions being tracked by a change notice revision. Use closure rules, such as a rule to exclude tools with a status of TCM Released, to exclude items from being captured by a change notice.
Tip
You can customize change notice report layout and elements using preferences with the suffix MECTRev.
Note
When a subassembly node is assigned from an EBOM to an MBOM, change notices track the assigned node and all of its children because the default value of the preference MEMCN_solution_object_collection_rule is GetChangedProcessLines. To add custom business objects to change notices, you must add them to the closure rule GetChangedProcessLines. If an EBOM line type is different from MBOM (for example, part versus item), you can modify the closure rule in this preference to define which lines are assigned and which are not. For example, to keep the assigned line of type PART from being added to the change notice, define the closure rule:
Copy
BOMLine:BOMLine:bl_all_child_lines:SKIP:PRIMARY.bl_item_object_type==
"Part"
Related Topics
- What are ECNs and MCNs?
Source: https://docs.sw.siemens.com/en-US/doc/282219420/PL20251212545240207.plm00260/xid1175792 · retrieved 2026-07-11