This section describes the data structures that may be passed to or returned from a service provider module function. They are used by modules to prepare data passing to and from the calling application through the OCSF Framework. These data structures are defined in the header file, cssmspi.h, which is distributed with the OCSF. Data structures that are specific to a particular type of service provider module, such as a Trust Policy (TP) Service Provider or Data Library service provider, are described in the individual OCSF service provider sections of this book.

The data structures used in OCSF are described in the /usr/lpp/ocsf/include/cssmtype.h header. Many of these data structures are compatible with the equivalent cssmtype.h headers on other OCSF platforms. The exceptions are those enclosed in "#ifdef_MVS".