Implementing Customer Discounts on Specific Inventory Items

I'm reaching out to gather insights on implementing customer appreciation sales, specifically offering discounts on select items within our system. In our legacy system, we managed such discounts by adjusting the markup percentage at the supplier level — setting it to '0' during sales and reverting to the original markup post-sale. 

Question: In the Oracle Cloud environment, considering the different setup for markup calculations, is there a streamlined method to offer item-specific discounts without significantly altering the markup settings or impacting the system's overall functionality? Any alternative approaches or best practices for executing such sales promotions would be highly beneficial.