Editing price changes
After a price change is created, you can continue to make changes to it until
			its Start Date is met and is
			set to a Status of Active. You can make changes to an individual price
			change inline or you can make changes to one or more price change from the Edit Price Change Values page.  Administrators and users
			with the appropriate role can edit price changes. 
	Note: You can only edit the details
				of a regular price changes with a Status of Approved or
					Draft. TPR price changes with a
					Status of Active can only have the End Date changed. Completed price changes have
				already occurred and cannot be modified.