manual

33 www.microsoft.com/sharepoint
The warning level for site administrators that their list is close to the threshold
limit. This warning is displayed on the list settings page. The default value is
3,000 items.
The number of query results that can be displayed for a site administrator. This
allows site administrators to access a larger data set than other site users. The
default value is 20,000 items.
The maximum number of unique scopes in a list. The default value is 50,000
items.
The number of lookup columns that each list can include. The default value is 6
lookup columns.
These settings are configured for each Web application. They can be accessed through
the General Settings option on the Web application ribbon.
Figure 17: Resource Throttling
Although the settings described above apply to all lists within the Web application,
additional settings are available and can be configured to override the Web application
settings: