Go to the Claim Status section of the voucher. The start date and the end date in that section have to be the earliest and latest dates you entered in either the services or expenses section. To easily find out what the earliest and latest dates are, go to the Services (or Expenses) tab and click on the Date column heading once to sort by date chronologically: Click on Date again and it will sort in reverse chronological order. Once you have entered the correct start and end dates in the Claim Status section, refresh your browser and the error message will go away.