IBM Support

PH66022: COMPATIBILITY CHANGES TO ESSS

A fix is available

Subscribe

You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Compatibility changes to ESSS for use by CPSM ESSS utilities
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All CICSPlex SM Users.                       *
    ****************************************************************
    * PROBLEM DESCRIPTION: Compatibility changes to the CPSM       *
    *                      ESSS address space for subsequent       *
    *                      releases of CPSM.                       *
    ****************************************************************
    * RECOMMENDATION: After applying the PTF which resolves        *
    *                 this APAR, the linklist must be updated      *
    *                 before attempting to start a new CPSM ESSS   *
    *                 (Environment Services System Services)       *
    *                 address space (EYUXnnn). The CPSM ESSS       *
    *                 address space is started on an MVS image any *
    *                 time a CMAS executes and the ESSS is not     *
    *                 already active.                              *
    *                                                              *
    *                 An ESSS restart or IPL is required if ESSS   *
    *                 is already active.                           *
    *                                                              *
    *                 In either case, after this update has been   *
    *                 applied to the ESSS module (EYU9Xnnn) in the *
    *                 linklist on an MVS image, all connecting     *
    *                 CMAS, MAS and API regions on that MVS image  *
    *                 must also have this update applied to all    *
    *                 SEYU* data sets before attempting to         *
    *                 reconnect.                                   *
    ****************************************************************
    This APAR addresses changes to the ESSS address space, to
    improve compatibility with subsequent CICSPlex SM releases and
    CPSM utilities.
    
    Keywords: CIC0603C/K  IBM.Coexistence.CICS.V6R3
    

Problem conclusion

  • ESSS has been updated to address compatibility concerns.
    
    Keywords: CIC0603C/K  IBM.Coexistence.CICS.V6R3
    

Temporary fix

Comments

APAR Information

  • APAR number

    PH66022

  • Reported component name

    CICS TS Z/OS V5

  • Reported component ID

    5655Y0400

  • Reported release

    20M

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2025-04-07

  • Closed date

    2025-08-28

  • Last modified date

    2026-04-20

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

    PH66023 UO03123 UO03124

Modules/Macros

  • EYU9X550 EYU9X560 EYUTXEPC
    

Fix information

  • Fixed component name

    CICS TS Z/OS V5

  • Fixed component ID

    5655Y0400

Applicable component levels

  • R20M PSY UO03124

       UP25/05/13 P F505

  • R30M PSY UO03123

       UP25/05/13 P F505

Fix is available

  • Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSGMGV","label":"CICS Transaction Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"5.5","Line of Business":{"code":"LOB70","label":"Z TPS"}}]

Document Information

Modified date:
20 April 2026