Price lists: create a list, then a campaign for the relevant items. Check the effective date before approval.
Promotions: select items, benefit and period. Creating a draft does not activate it. Check the preview.
Loyalty points are linked to sales. Corrections require a reason. Printing a label does not change stock.
Example
For an item priced at 20.00, a 10% discount represents 2.00 before other applicable rules. Select the item, period and rate, then check the preview. Use a price list instead of a promotion for a permanent price change.
Check before confirming
Check currency, date and time, eligible items and combination with other offers. A draft is not active. Approve and activate using the available actions; print and verify new labels after the price change.