CAUSE . . . . The delivery date is invalid for one of the following reasons – The month is not valid (Must be a number from 1 to 12) – The day is not valid (Must be a number from 1 to 31 and valid for the month) – The year is not valid (Must be a number from 00 to 99) – The field is blank

RESOLUTION. . Enter a valid delivery date on the ticket.