DSS2 — Register Object Instance With Regions: unique names

The last paragraph of this service description says,

If the optional object instance name argument is supplied, that name shall have been successfully reserved as indicated by the Object Instance Name Reserved † service and shall be coadunated with the object instance. If the optional object instance name argument is not supplied, the RTI shall create one when needed (Get Object Instance Name service).

This implies that the RTI may not always create an object instance name. However, the registration of all object instances should be treated consistently, whether they are registered with or without regions. All object instances should have federation execution-wide unique names. With regard to the behavior described in this paragraph, the Register Object Instance With Regions service should behave identically to the Register Object Instance service, 6.4. That is, if the optional object instance name argument is not supplied when the Register Object Instance With Regions service is invoked, the RTI shall create a federation execution-wide unique name and that name shall be coadunated with the object instance.

see above