UPCs are handled by ItSynx, so nobody types one in.
- When a size-level product is published for the first time, it’s given the next available UPC from your team’s pool.
- An item that was already in NetSuite without a UPC can be given one with Assign a UPC.
- The dashboard warns in amber when the pool is getting low, based on your recent usage, and in red when it’s critically low. If it runs out, publishing new products stops until you add more on the UPC Ranges screen.
Sync Audit also checks NetSuite for duplicate UPCs and for products missing their UPC.
Full detail: Product Management.