Discount Price Method

Discount Price Method defaults to the Item Discount Price Method of the item for which you are setting up pricing. 

If Discount Price Method = "Discount By Discount Price", the Discount Percent field in the pricing grid will not be enterable.

If Discount Price Method = "Discount By Discount Percent", the Discount Percent field in the pricing grid will be enterable and the Discount Price will be calculated.