Manage Only Positive Invoice Tolerances and Allow Credit Memo variances to pass Validations?

Summary

Is it possible to set an Invoice Matching Tolerance to PO that controls only neg variances (CR Memos applied)

Content

Is it possible to enter in configurations an invoice matching tolerance that controls only positive Invoice/PO matches and allows the CR memo (negative amount invoices) to pass validation? For example, we have an invoice/PO matching tolerance of 1 so any invoices that exceed this amount matched to PO (e.g. 2) will be placed on hold.

However we have a valid CR memo for -3 that is matched to the PO (e.g. return credit). Can this be excluded from the invoice matching tolerance?