Diagnosis
Incompatible period unit and time deposit term. For example, the periodunit is "month", but the period from account open date (1/1/02) tomaturity date (2/15/02) is 46 days, or one month 15 days - not inmultiples of month.

System Response
Program stops and prompts the user to re-enter the maturity date.

Procedure
Correct the maturity date field. It is recommended to input "+61" foradding 61 days to the account opening date (or to the rollover date ifaccount has been rolled over); "++3" for adding 3 full months; "+++2"for two years (24 months).