SharePoint’s calendar has a hard limit of 1000 items per calendar month. (this is not documented)
I am not calling this a bug, because it seems intentional and planned. I am calling this a HARD limit, because 1000 is actually the exact number for upper boundary.
To demonstrate, I wrote a script that populates a calendar list with events, and let it create over 1000 events. I then saw that only 1000 items are shown, the 1001st item will not be displayed.
What I mean by “calendar month”?
this limit applies for events that are scheduled for the same month.
What does this limit applies for?
- For displaying events (all events types) in the different calendar views (monthly,weekly,daily) -
You will see only the first 1000 items. - For displaying the details of a recurring event (using dispform.aspx), that is not shown in the different calendar’s views (monthly,weekly,daily) -
If you create 1500 items and (for example) item # 1500 is not shown, if that item is a recurring event, you will not be able to see it’s details. If it is not a reoccurring event, you won’t have any problem seeing it’s details, even though it is item # 1500.
What doesn’t this limit does not apply for?
- For displaying items in a regular list view (tabular view) -
You can still see thousands of items in a regular list view (allitems.aspx) like you can in any other list type. - For storing items in the list -
Working with event as items in a list in any other way than calendar views, is not affected by this limit.
-- My name is Itay Shakury, and I'm a SharePoint consutant --