Invalid Person in Defect Notes on Prebills

An invalid person means a Fee or Expense is assigned to someone who is not in the system. Go to Bill Preparation for the Client-Matter and check the Fees and Expenses. It may be that a Timekeeper has recently changed initials, and a transaction may not have been converted. Once found, highlight the entries, right click, and select Global Edit to change your entries to the correct Timekeeper.