Error in Mileage Calculation I-Expense

Hi Experts,

   

          This error "oracle.jbo.TooManyObjectsException: JBO-25013: Too many objects match the primary key oracle.jbo.Key[1398395 2 2 ]" is appearing whenever I tried to pressed Calculate for the second line in the Mileage Expenses. There was no problem in creating the general information, and filling up the Receipt-Based Expenses lines with the date, receipt amount, Expense Type, Justification, and reimbursable amount under the Cash and other expenses. But when I tried adding a second line in my Mileage Expenses.. This error's stopping the calculation. Attached is the screenshots for better understanding. Thanks

Regards,

Mark