'Fixed Price Services' Line type purchases do not capture Invoice Price variance account on AP Invoi

Summary

PO Matched Invoices - Difference in PO and Invoice amount is captured only for 'Goods' line type but Not for 'Services' Line type

Content

PO Matched Invoices - Difference in PO and Invoice amount is captured for 'Goods' line type purchases by invoice price variance account  but Not for 'Services' Line type? Is this a std functionality?

Our purchases are all 'expense type items and Accrual is set as 'On receipt'. Due to this issue, Users have to spend lot of time to adjust accounting line in Receipt accounting. What config changes is required to enable IPV to be captured for 'Services' line types and reduce manual adjustments (Receipt accounting)