If there is a schedule payment due and you have not entered a payment for that date, the system will mark that as a missed repayment loan.
For example, if a loan payment is scheduled on the 15th January for $100 and you have not entered any payment on 15th January or before, system will mark it as missed repayment status. If you enter even $1, system will not consider this as missed repayment loan since you have collected some money for the due date. This will allow you to identify missed repayment loans easily so you can chase them for payment on priority basis.
To see the loan schedule dates generated by the system, please login and visit Loans >> View All Loans >> View. There, click on the Loan Schedule tab.