It could be is a result of personal preference, technical consideration or corporate decision. No matter what the reasons are, if your business decided that certain items (or all of them) are of specific brand, SAP Business One enables you to define manufacturers and assign the relevant manufacturer to the respective items:
In addition, you can define discount groups according to manufacturers:
Available in SAP Business One, version for SAP HANA and SAP Business One. This tip and all the other tips are available on the Tip of the week community page. You can also visit the Implementation Arena for useful implementation tips.