PickbyLabel: Why system can not use LPN has allocated in SO for pickby Label method

We using pick by label method. Our scenarios as bellow:

1. Create SO and reserved fully to LPN1, LPN2, LPN3

2. Release sales order and LPN1,2,3 has allocated in SO.

3. Task created in WCB for SO.

4. Using pick by label for pick goods. We don’t know why system generate the LPN temporary for pick by label. When scan LPN temporary and press “Done” button, we can go to pick all of LPN has allocated in SO

Because we have already print label and paste to item. So best practice that system allow pick each LPN in this screen. We can pick one by one LPN.