This tool is useful if two objects are apparently different but show the same part number. All items with the same part number are highlighted in red when selected.
Note: Objects that were previously highlighted in red will be kept. To remove the highlight, first clear marked objects. See Unmark objects.
To access the command
Ribbon: Output > Part marks: 
Command line: _AstM5equalpartsMarkSame
To display the objects with identical part number
- On the Output tab, Part marks panel, switch to the single part or assembly.
- Select a structural part.
-
Output
tab,
Part marks
panel: Click .
- The found items are highlighted in red.