Is there notification or note on expense documents when a single line has been denied? Unable to loc

I have been testing approval workflow for travel authorizations. I am using HR Supervisor, Expense Approver and PrePay Auditor for the workflow.  I denied a single line of the TA as the Expense Approver.  When I logged in as the traveler there was nothing that noted that a single line had been denied.  I then logged in as the PrePay Auditor and found that the line was still denied and I had the option to re-check the line and complete the approval or leave it unchecked and complete the approval.  At no time did I find any notification that the