• 01/01/1900 not longer recognized as "unknown date"

    When the system was established to report the marketing status of centralized products, we were advised to use 01/01/1900 as a generic date for "unknown date", e.g. unkown date of "estimated date of reintroduction" after a temporal marketing cessation. Currently, I get an invalidation message that says that reintroduction dates "should be in the future" when I used that date.

    Is there another "joker date" that I could use, has anything changed?