Prevent adding extra materials during the creation of Delivery

If you want the end users to create the delivery only for the items that are in the Sales Order and not any other material, do the following:

Go to transaction OVLK.

Select the delivery type LF (as shown above) and double-click on the same.

Here change the field ItemRequirement to 201, as shown below:

Now the users wouldn’t be able to add any material which is not available in the sales order.