Remove Invalid Prices
Explanation
When prices on a price list become invalid, it is possible to
remove these prices.
Prerequisites
This activity has the following 
prerequisites:
	- A sales price list must have been entered and saved.
- The user must have access to the owning 
	company of the sales price list. 
System Effects
Prices with a valid date before a given date are removed from the
price list.
Window
Sales
Price List
Sales Price Lists
Related Window Descriptions
Sales Price List
Remove Invalid Prices
Sales Price Lists
Procedure
  - Choose Remove Invalid Prices in the operations menu from a sales
    price list.
- Enter a keep prices valid from date in the dialog box. Prices with
    valid date before the entered date will be removed.
- Click on the OK button.