A Pool tracking region maintains the Items in the tracking queue in the order the Items entered the region.
A Pool region must have the following when it monitors the items in the region by their:
Unique Item identifiers
An automatic Item Identifier,
or
A User transaction (specifying
Item ID or Reference ID), or
An Application Interface message
(specifying Item ID or Reference ID) as a Region Entry Indicator,
or
Be preceded by a Sequential
Tracking Region also monitoring the relative sequence of the Items
in the region by their unique Item or Reference Identifiers.
Item Type
An Item Type detector, or
A User transaction (specifying
Item Type), or
An Application Interface message
(specifying Item Type) as a Region entry Indicator, or
Be preceded by a Sequential
Tracking Region also monitoring the relative sequence of the Items
in the region by their Item Type.
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Primary region types. |
