Currently the planning flexibility on the purchase order lines allows for two options:

1. Unlimited, these lines are open for change suggestions in the purchase requisition worksheet

2. None, no chage suggestions are made for these lines

It would be verry helpful to add a third option to only allow planning suggestions regarding the planned delivery and don't allow any change suggestions with regards to the quantity of the purchase order line.

The fourth option could be exactly the opposite of the third option.

These additional options will result into a more straightforward purchase requisition worksheet result for companies which don't want to change outstanding purchase orders in a certain way (either quantity or delivery date) but want to make sure their demand is fullfilled in time by taking into account already outstanding orders.