How to handle variance amount for Invoice Matching on Partial Received PO

When create invoice matching on partially received PO, there's variance for invoice amount as invoice amount in 2 decimal points, while PO amount is calculated based on 4 decimal points unit price.

Current workaround, AP user need to manually add in additional invoice line to net off the variance amount incurred, in order to proceed for validation.

Would like to seek for advice if there's any solution to overcome this issue.