Yes, you can require every item to be scanned during packing in the WMS App. You set this mandatory scanning during packing via the user role: Users can then no longer confirm a product by tapping it, but have to scan it. This prevents packing errors, even if you pick using a paper picklist and only scan at the packing table.
Setting up mandatory scanning during packing
You set up mandatory scanning during packing in the Pickware Admin under Settings → System → Users & Permissions in the user's role. The scan requirement permissions work the other way around: They allow confirming without a scan. A scan requirement is created by removing them.
If you remove Scanpflicht - Produkte beim Packen ohne Scan bestätigen, every product has to be scanned once before it can be confirmed.
If you also remove Scanpflicht - Anzahl von Produkten beim Packen ohne Scan erhöhen, every single unit has to be scanned. Plus, minus, and All then no longer increase the quantity.
The change takes effect as soon as the user logs out of the WMS App and logs back in. Mandatory scanning during packing is independent of mandatory scanning in picking: You can require scanning only during packing, only during picking, or at both stages.
Attention: Do not modify the Pickware WMS User role. It is updated automatically when features are extended. Duplicate it and remove the permissions in the copy.
What else you should know
You exempt products without a barcode from mandatory scanning by activating Exclude from mandatory product scan on the product. They can then also be confirmed by tapping during packing.
After the update, all existing roles have both permissions for packing. So nothing changes in packing until you remove them. Mandatory scanning during packing requires an up-to-date WMS App.
What each of the scan requirement permissions does in detail is described in How do I manage users and user roles for Pickware WMS?.