Summary
Index card fields of type long integer should only accept values from 0 to 2,147,483,647.
Workaround
We strongly recommend that long integer fields be limited to a value between 0 and 2,147,483,647.
More Information
Currently, values up to 3,999,999,999 can be stored in an index card field of type long integer. Values above 2,147,483,647 are not supported and will be considered invalid in a future version.