This documents lists the function codes used by the sub-system interface (SSI) on the MVS, OS/390 and z/OS operating systems.
Code Description of the function SSOB Macro
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1 Process Sysout IEFSSSO
2 Cancel IEFSSCS
3 Job Status IEFSSCS
4 End-of-task IEFSSET
5 Job selection IEFSSJS
6 Allocate SYSIN/SYSOUT Internal Reader IEFSSAL
7 Unallocate SYSIN/SYSOUT Internal Reader IEFSSAL
8 End-of-memory IEFSSEN
9 WTO IEFSSWT
10 Command processing IEFSSCM
11 Remote destination validity check IEFSSUS
12 Job termination IEFSSJT
13 Re-enqueue job IEFSSRQ
14 Delete operator message (DOM) IEFSSDM
15 Verify subsystem name IEFSSVS
16 Open subsystem data set IEFSSDA
17 Close subsystem data set IEFSSDA
18 Checkpoint subsystem data set IEFSSDA
19 Restart IEFSSDA
20 Request job id IEFSSRR
21 Return job id IEFSSRR
22 Step initiation IEFSSSI
23 Dynamic allocation IEFSSDY
24 Common allocation / JES3 Exit IEFSSCA
25 Common unallocation / JES3 Exit IEFSSCU
26 Change ddname IEFSSDD
27 Change ENQ use attribute IEFSSNQ
28 DDR device candidate selection IEFSSDR
29 DDR device candidate verification IEFSSDR
30 DDR UCB swap notification IEFSSDR
31 DDR swap completion IEFSSDR
32 Command Fail IEFSSCF
33 Console switch IEFSSWT
34 Write-to-log message IEFSSWT
35 MSS volume control IEFSSMO
36 MSSC Message Task IEFSSMS
37 MSS OPEN/EOV exit IEFSSMO
38 Converter SUBSYS exit IEFSSCI
39 Allocation group request IEFSSAG
40 Volume release IEFSSVR
41 IMS: identify DFSSSOB
42 IMS: terminate DFSSSOB
43 IMS: connect DFSSSOB
44 IMS: disconnect DFSSSOB
45 IMS: create thread DFSSSOB
46 IMS: terminate thread DFSSSOB
47 DLI call DFSSSOB
48 IMS V2 Help DFSSSOB
49 ESS CALL DFSSSOB
50 Early end-of-task IEFSSET
51 IRLM DFSRLIPL
52 DBCTL DFSSSOB
53 Unknown
53 FSS: connect and disconnect
54 Request subsystem version info IEFSSVI
55 SMS exit services IEFSSSA
56 SMS to JES3 interface
57 Reserved
58 Subsystem accounting IEFSSSM
59-61 Unknown
62 MVS Bulk Data Transfer BDTDBSIW
63 Service Processor damage
64 Transaction notification (APPC) IEFSSTS
65-66 Unknown
67-68 OPC/A dialog user
69 Unknown
70 Scheduler Facility Services IAZSSSF
71 Job information services IAZSSJI
72 Vary path IEFSSPT
73 Subsystem generic connect IEFSSGC
74 Unknown
75 JES notify user IAZSSNU
76 Unknown
77 Persistent JCL interface IAZSSPJ
78 Tape drive selection IEFSSTA
79 SYSOUT API (SAPI) IAZSSS2
80 Extended Status IAZSSST
82 JES Properites
83 JES Device Information
85 Modify Job Function Call
100-164 DFRMM
Last Update: July 2012