When creating a Return for Credit and adding a line item from an Invoice. If the original UOM is a Case and it will convert to Each and then it will multiply the discount by the Quantity. Which is incorrect and your Credit Memo will be much higher.
Example
1 case of 6 units - total discount is 2.55 and total case is 48.45
Credit Memo for the 1 case of 6 units, it converts to Each (base uom) 6 units but it does not divide the discount instead it multiply the discount of 2.55 * 6 = 15.30
Invoice
Credit Memo
Please fix this bug ASAP, impacting the credit memo process.
The original way is to just keep the some UOM when creating Credit Memo.