Vital KM
When you add a document, the date field displays a "Please enter the correct date format" reminder and cannot post the document.
While the date field for new documents shows "default", you can click the date which will pop out a "Please enter the correct date format" reminder. If the reminder is not closed, the file cannot be published.
If the date field is set as [Use system date time], you can go to [Manage] > [Category] to find said category and click [Edit] to cancel the [Use system date time] function upon which the field will normally display.
Screen for adding new document:
https://faq.vitalyun.com/EN/Knowledge#920