New ETIM Class Due to Changed Item Group
If you change the item group for a module and the new item group has a different ETIM class, a warning will appear.
The items in this module will get a new ETIM class but will not change status.
If the new item group has multiple ETIM classes, you must select the correct ETIM class.

Then, send the module for approval.
You can add ETIM property values for the items in the module.