An application thread can make three types of requests with SAPI. Each is independent of, and mutually exclusive with the others. Field SSS2TYPE indicates which of these three possible types of requests the application thread is issuing:

• SSS2PUGE - indicates a SAPI PUT/GET request
• SSS2COUN - indicates a SAPI COUNT request
• SSS2BULK - indicates a SAPI BULK MODIFY request

This is the function each serves:

• PUT/GET
  • Initiates data set selection, and optionally can provide disposition processing for the data set returned in the previous SAPI PUT/GET call. The SAPI PUT/GET call is described on PUT/GET Requests.
• COUNT
  • Returns the count of entries that can be scheduled without returning a particular data set. The SAPI COUNT call is described on COUNT Requests.
• BULK MODIFY
  • Modifies selected attributes of one or more data sets. The BULK MODIFY call is described on BULK MODIFY Requests.