Assigning more than one object ID to an object

At this time, you can assign more than one object ID to a WPS object. To 
do this, create an object with a new object ID. After that assign one or 
more new object IDs to the object using <SysSetObjectData. Now you can use 
the original object ID or one of the new object IDs to refer to the 
object. 

The explanation for this from Greg Czaja (see EMail Addresses) is: 

"What really happening is that WPS will assign a new ID (and it will be 
stored in the object's properties but the old one will NOT be removed from 
OS2.INI -> PM_Workplace:Location. This allows you to refer to an object 
using both - the old and the ID's. At least from a REXX or PM program - 
WPS will use only the new one."   

Source:  Gregory Czaja (see EMail Addresses)