My way of doing this may not be an 'out-of-the-box' solution, but it's worked well for me over the course of many years. There are 5 things to keep in mind when doing it like I do:
1. Don't use the 'Item',
2. Make your own part number from one of the other iProperties or from a User iProperty,
3. Assign all part numbers in the assembly BOM. I usually do this near the end of modeling.
4. Setup your idw so the part number (iProperty) is referenced somewhere in the titleblock text. Every company has their own titleblock and drawing standard, so you have to us whatever is the standard.
5. The 'Part Number' is the only iProperty that Inventor uses to identify SAME parts in the BOM and PartsList. So you can use that to 'RollUp' your idw PartsList. RollUp means all the same parts will combine into one line item in the PartsList. So I reserved the 'Part Number' iProperty for 'RollUp' only. That simplifies my method.
Since my part number is a compound part number I won't explain it to you b/c it can be confusing.
But I will tell you that I use 'Stock Number' as the part number that shows up in the idw PartsList. You just have to rename the PartsList column from 'Stock Number' to whatever you call your part number. Mine is 'MARK', since in the structural steel industry they call the part number a part's "Mark" or "Mark Number". It's the MARK they put on each part so the guys on the construction site can identify it on the drawings.
See attached illustration...
... Chris
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