Yes, this is possible. A document template of type Shipping and Handling Bill must be applied to the Purchase Order or the Purchase Bill.
Once a Purchase Order has been invoiced or a stand-alone Purchase Invoice has been created, it is possible to issue one or more Shipping and Handling Bill documents against these invoicing documents.
The Supplier in this Shipping and Handling Bill does not need to be the same as the Supplier corresponding to the initial purchase order/bill. In most case, the supplier is the same though.
Only Products of Product Type Services can be added to these documents.
The service product should be added in the Shipping and Handling Bill with a negative price
Moreover, the Products of multiple Bills can be discounted by a single Shipping and Handling Bill document. Which Bills will be affected is determined by a selection of the Purchase Bills as shown below:
Approving this document will prompt the input of the Bills the discount will be applied to.