Problem
Only one of the Discount amount and Discount percentage fields was saved, even though you filled in both.
Possible cause
The system only allows one type of discount at a time. When you type a value in one field, the other is automatically cleared. This is intentional.
Solution
Decide whether you want to use a fixed amount or a percentage.
Fill in only the relevant field and leave the other empty.
If the problem persists, contact support and include details about:
Which discount type you want to use.
When the issue occurred.