Message SAP WRF_PPW209 - Material &1 (&2), &3: Deleting the price resulted in a price increase

Diagnosis
Deleting the price for material &V1&, sales unit &V2&, andorganizational level &V3& will result in an implicit price increase.
You have configured the price plan type for the current price plancategory in Customizing to output a warning message when implicit priceincreases are made.

System Response
The system outputs a warning message, but the price deletion remains ineffect.