1.The "backflush BOM materials at start": parameter = yes and I am using advanced warehousing. I am also having multiple picking rounds for one prod order because not all materials are always there at the start. I want to pick and then backflush what I have and pick and backflush the rest later. 2. This scenario is not supported in current system. I release my prod order with not all materials available yet.. No problem there. Warehouse work only generated for what I have . I complete whs work 3. Now the operator wants to start operation 10. We have backflushing at start. This is a process operation so it has a quantity. The system wants to auto flush but the picklist is created for all items in the prod bom, including the ones we don't have yet. 4.The auto backflush at start fails, the operator can't start the job 5.We need the proposal parameter that is avl when I manually create picklists. It would be set to 'picked' in our case. then we have no problem. Just like with sales order "shipping what you picked" we could at prod order do a partial backflush for what we have picked. The remainder we do another day. 6. The mfg execution prod order defaults needs a parameter "proposal" for the picklist which would solve our problem. I see this as a fundamental feature to make advanced warehousing work with production order execution functionality. But even without execution we would have the problem. If I just "Start" the prod order and want to auto flush at start. there is no way to tell the system that I want only the 'picked' items.