DSHIPIDL

The DSHIPIDL system initialization parameter specifies the minimum time, in hours, minutes, and seconds, that an inactive shipped terminal definition must remain installed in this region.

DSHIPIDL={020000|hhmmss}
When the timeout delete mechanism is invoked, only those shipped definitions that have been inactive for longer than the specified time are deleted.

You can use this parameter in a transaction routing environment, on the application-owning and intermediate regions, to prevent terminal definitions having to be reshipped because they have been deleted prematurely.

The default minimum idle time is 2 hours.
hhmmss
A 1- to 6-digit number in the range 0-995959. Numbers that have fewer than six digits are padded with leading zeros.