Custom Validation on AP Invoice line based on account segment value

Summary

Custom Validation on AP Invoice line based on account segment value

Content

Is it possible to write an expression that will prevent the invoice from getting saved or give a validation error to enter project number when ap specialist uses project clearing account?

We have a requirement where for invoices related to projects, we have our AP team use project clearing account. But whenever they use project clearing account, they must enter project number, task number, expenditure category. Lot of times, they use project clearing account but do not enter project details.

How can we go about doing it?