Achieving interoperability between geospatial applications is a challenging research issue that attracts the attention of a growing number of scientists. By interoperability we mean that users of geospatial information systems can share their information in a distributed and heterogeneous environment. In such a distributed environment establishing relationships between geospatial objects require a mechanism to provide a persistent and globally unique object identifier, GUOID. In this paper we argue that given the reasons for the need of GUOIDs, an object is not required to be stored with a GUOID in local databases. Instead, a mechanism to provide a GUOID is only required when objects are outside the address space of the local database.