z/OS DFSMStvs Administration Guide
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Module identifiers

z/OS DFSMStvs Administration Guide
GC52-1388-00

Each reason code uniquely identifies the module that issued it. Table 1 lists the two-digit hexadecimal module identifiers.

Table 1. Reason code module identifiers. This table lists the two-digit hexadecimal module identifiers.
Module Identifier Area
IGW8IIN1 01 Initialization
IGW8RRES 03 Restart
IGW8OODS 04 Open
IGW8OCDS 05 Close module identifier area
IGW8FCRB 06 Front end processing
IGW8FEXP 07 Front end processing
IGW8FCLN 08 Front-end processing clean-up routine
IGW8RECE 09 End context exit
IGW8REOM 0A End-of-memory exit
IGW8RCHK 0B State check
IGW8RPRP 0C Prepare
IGW8RPR1 0D Prepare
IGW8RCMT 0E Commit
IGW8RCMS 0F Commit
IGW8RBOU 10 Backout
IGW8RIOM 11 Backout
IGW8RBOS 12 Backout
IGW8ROP2 15 SMSVSAM server open
IGW8RCLS 16 SMSVSAM server close
IGW8RMSG 17 Message processing
IGW8RCSE 18 Context switch exit
IGW8RNFY 19 Notification exit
IGW8RQUI 1A Quiesce exit
IGW8RCEF 1B Context services exit failed exit
IGW8IIN2 1C Initialization
IGW8RVTV 1D Sync point processing
IGW8RDSN 1E Shunt processing
IGW8PCLN 1F Peer recovery processing
IGW8QPOP 20 Quiesce processing or shunt processing
IGW8FLBI 21 Front end processing
IGW8FLAI 22 Front end processing
IGW8RPC1 23 PC router
IGW8RPC2 24 PC router
IGW8RPC3 25 PC router
IGW8FLPA 26 Front end processing
IGW8RCHN 27 RPL chain processing
IGW8FMSG 28 Message processing
IGW8XMSG 29 Message processing
IGW8ROAE 2A Only agent exit
IGW8SLUD 2B Shunt processing
IGW8FEPL 2C Front end processing
IGW8QEXR 2D Quiesce exit
IGW8QEXP 2E Quiesce exit
IGW8QEXT 2F Quiesce exit
IGW8QEXR 30 Quiesce exit
IGW8CDLG 31 Command processing
IGW8CDTV 32 Command processing
IGW8CDJB 33 Command processing
IGW8CDDS 35 Command processing
IGW8CVLG 36 Command processing
IGW8CVTV 37 Command processing
IGW8CSQT 38 Command processing
IGW8CSAK 39 Command processing
IGW8CDUR 3B Command processing
IGW8RREF 3C Exit failed exit
IGW8OLOG 3F Open
IGW8RRTS 40 Restart
IGW8IIN6 41 Initialization
IGW8RRMC 42 Backout
IGW8SRBC 43 Shunt processing
IGW8SRUR 44 Shunt processing
IGW8SPBC 45 Shunt processing - base cluster
IGW8SPUR 46 Shunt processing - unit of recovery (UR)
IGW8SLBC 47 Shunt processing - base cluster
IGW8SLUR 48 Shunt processing - unit of recovery (UR)
IGW8SLUC 49 Shunt processing
IGW8IIN7 4A Initialization
IGW8CVT1 4B Command processing
IGW8FTSK 4C Front end processing
IGW8RCID 4D Commit
IGW8RBID 4E Backout
IGW8RAKP 4F Activity keypointing
IGW8RCSE 50 Context switch exit
IGW8QSHN 51 Redrive shunt processor
IGW8IRLB 52 Initialization
IGW8RSRB 53 SRB scheduling
IGW8RSR1 54 SRB scheduling
IGW8RFRR 55 SRB Recovery routine
IGW8RSCH 56 Schedule SRB
IGW8RCLN 57 Sync point processing clean-up routine
IGW8ISTX 58 Read undo log
IGW8IRS1 59 Read undo log
IGW8IRS2 5A Read undo log
IGW8PIN1 5B Read undo log
IGW8PIN2 5C Read undo log
IGW8OPNR 5D Open data set exit
IGW8REOX 5E End of task, job step, or memory
IGW8RCS1 5F Context switch
IGW8RSR2 60 SRB processing
IGW8RSR3 61 SRB processing
IGW8RSR4 62 SRB processing
IGW8RSHN 63 Shunt processing

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