This ID determines whether the number intervals are buffered for
assignements and checks.

Use

The number interval buffer is in the Shared Memory of the
application server. Each buffer is used to store the external
number intervals and a certain number (subinterval) of the internal
number intervals. If the numbers of an internal number interval are
used up, numbers are taken from the database via the number range
server. The status of the number interval in the database is
increased by the number of numbers fetched to the buffer.

Dependencies

When buffering number intervals, gaps may result in number
assignment. Buffering is therefore not possible for applications,
which require continuous number assignment.