This document defines the application programming interface (API) to management of Open Systems Interconnection (OSI) objects. This interface is needed by other APIs specific to particular OSI services. Currently, these include the X/Open APIs to Directory Services (XDS), Electronic Mail (X.400) and Systems Management Protocol (XMP). This Issue 3 includes revisions to align with the ISO OSI Object Management group of standards that are based on the previous issue of this specification. All new implementation work by API providers should follow Issue 3.