The formula for Line item Revenue and Cost of Sales line items is not working and giving an error as below. This is from LEVEL 1 -Part 08 activity- Add Formulas to Line Items in REV03 Margin Calculation. Kindly help
ERROR: The formula for 'REV03 Margin Calculation'.Cost of Sales is invalid ;REV02 Volume Inputs'.Volumes is not a recognized line item or list member
line item- Revenue
Formula - 'REV02 Volume Inputs'.Volumes * 'REV01 Price Book'.Unit Sales Price
Line Item- Cost of Sales
Formula- 'REV02 Volume Inputs'.Volumes * 'REV01 Price Book'.Unit Costs