For the latest information on upgrading to and from any versions of CICS TS, see CICS TS 5.5.

CSD compatibility between different CICS releases

You can share the CICS® system definition data set (CSD) between different CICS releases by using the appropriate compatibility groups.

Most releases of CICS change the CICS-supplied groups of resource definitions that are included in the DFHLIST group list. The old versions of the CICS resource definitions are retained in compatibility groups. If you share the CSD between different CICS releases, these compatibility groups are needed to support earlier releases.

After you upgrade a CSD, if you plan to share the CSD with earlier releases of CICS, include the appropriate DFHCOMPx compatibility groups in your startup group list. Table 1 shows you which DFHCOMPx groups to include for each earlier release.

Do not attempt to share a CSD with a CICS region that is running at a higher release level than the CSD.

You must install the compatibility groups in the correct order, as shown in the table. For example, to run a CICS TS 4.1 region with a CSD that is upgraded to CICS TS 5.1, add the DFHCOMPF compatibility group, followed by the DFHCOMPE compatibility group, to the end of your group list.

Language Environment® definitions in CEE group are supplied in the CEECCSD and CEECCSDX members of the SCEESAMP library. For CICS TS 4.2 and below, CEE group is part of list DFHLIST. For CICS TS 5.1 and above, CEE group is not required and is not part of DFHLIST.

Table 1. Required compatibility groups for earlier releases of CICS
	CICS TS 5.1 CSD	CICS TS 4.2 CSD	CICS TS 4.1 CSD	CICS TS 3.2 CSD	CICS TS 3.1 CSD
Shared with CICS TS 5.1	None	Do not share	Do not share	Do not share	Do not share
Shared with CICS TS 4.2	DFHCOMPF CEE	None	Do not share	Do not share	Do not share
Shared with CICS TS 4.1	DFHCOMPF DFHCOMPE CEE	DFHCOMPE	None	Do not share	Do not share
Shared with CICS TS 3.2	DFHCOMPF DFHCOMPE DFHCOMPD CEE	DFHCOMPE DFHCOMPD	DFHCOMPD	None	Do not share
Shared with CICS TS 3.1	DFHCOMPF DFHCOMPE DFHCOMPD DFHCOMPC CEE	DFHCOMPE DFHCOMPD DFHCOMPC	DFHCOMPD DFHCOMPC	DFHCOMPC	None

Compatibility group DFHCOMPF

Group DFHCOMPF is required for compatibility with CICS Transaction Server for z/OS®, Version 4 Release 2.

Table 2. Contents of compatibility group DFHCOMPF
Resource type	Name
FILES	DFHADEM
MAPSET	DFHADMS
PIPELINE	DFHWSATP DFHWSATR
PROFILE	DFHCICSI
PROGRAM	DFHADDRM DFHADJR DFHADWB0 DFHADWM0 DFHADWM1 DFHADWM2 DFHADWM3 DFHADWM4 DFHADWM5 DFHADWM6 DFHADWT0 DFHADWT1 DFHADWT2 DFHADWT3 DFHADWT4 DFHADWT5 DFHCHS DFHDLLOD DFHD2EDF DFHEDFX DFHEIGDS DFHEITAB DFHEITBS DFHEITSZ DFHEJDNX DFHEJEP DFHEJITL DFHIIRRS DFHJVCVT DFHLETRU DFHPIEP DFHPIVAL DFHSJGC DFHSJPI DFHSMTAB DFHXOPUS DFJCICS DFJCICSB DFJCZDTC DFJDESN DFJIIRP DFJIIRQ DFJ1ESN DFJ1ICS DFJ1ICSB DFJ1ZDTC
TRANSACTION	CBAM CDFS CEHP CEHS CEJR CEMT CEOT CESF CESL CESN CEST CETR CIEP CIRP CIRR CJGC CJPI CLQ2 CLR2 CLS2 CLS3 CLS4 CMPX CMSG CPMI CQPI CQPO CREA CREC CRSQ CRSR CRSY CRTE CSAC CSHR CSMI CSM1 CSM2 CSM3 CSM5 CSNC CSSF CVMI CXCU CXRT

Compatibility group DFHCOMPE

Group DFHCOMPE is required for compatibility with CICS Transaction Server for z/OS, Version 4 Release 1.

Table 3. Contents of compatibility group DFHCOMPE
Resource type	Name
PIPELINE	DFHWSATP DFHWSATR
PROGRAM	DFHMIRS DFHCCNV DFHUCNV DSNTIAC DSNTIA1 DFHEDP DFHDBAT DFHDBUEX

Compatibility group DFHCOMPD

Group DFHCOMPD is required for compatibility with CICS Transaction Server for z/OS, Version 3 Release 2.

Table 4. Contents of compatibility group DFHCOMPD
Resource type	Name
TDQUEUE	CPLD CPLI
PIPELINE	DFHWSATP DFHWSATR
PROGRAM	DFHPIVAL DFHSJJML IXMI33DA IXMI33D1 IXMI33IN IXMI33UC IXM4C56
TRANSACTION	CJMJ

Compatibility group DFHCOMPC

Group DFHCOMPC is required for compatibility with CICS Transaction Server for z/OS, Version 3 Release 1.

Table 5. Contents of compatibility group DFHCOMPC
Resource type	Name
PIPELINE	DFHWSATP DFHWSATR

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Last updated: Thursday, 27 June 2019