D365 - Use the Inventory button to remove the marking on the order line before you update any financial dimension.
- Go to the "Inventory" dropdown on the line item section
- Select "Marking"
- Click the "Set Mark Now" checkbox
- Click OK
- Line should be un-marked
Found with the following link:
https://community.dynamics.com/365/supply-chain-management/f/dynamics-365-supply-chain-management-forum/402559/use-the-inventory-button-to-remove-the-marking-on-the-order-line-before-you-update-any-financial-dimension