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PH68321: Optional whitespace within Web service header causes rejection

A fix is available

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • The CICS web service code adds the header Accept-Encoding
    without a value and some optional whitespace.  With this extra
    whitespace its possible for routing servers to reject the HTTP
    request.  This can lead to DFHPI0400 and DFHPI0997 messages on
    the CICS log.
    

Local fix

  • NA
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All CICS Users.                              *
    ****************************************************************
    * PROBLEM DESCRIPTION: Optional whitespace characters are      *
    *                      included in the request header by CICS  *
    *                      during an INVOKE SERVICE or INVOKE      *
    *                      WEBSERVICE outbound request.            *
    ****************************************************************
    When CICS issues an INVOKE SERVICE or INVOKE WEBSERVICE request,
    the constructed Accept-Encoding header is "Accept-Encoding:  "
    

Problem conclusion

  • DFHPITH has been updated so that the Accept-Encoding header is
    set to "identity"
    

Temporary fix

Comments

APAR Information

  • APAR number

    PH68321

  • Reported component name

    CICS TS Z/OS V5

  • Reported component ID

    5655Y0400

  • Reported release

    500

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2025-09-29

  • Closed date

    2026-01-12

  • Last modified date

    2026-02-01

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

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

    UO06462 UO06463

Modules/Macros

  • DFHPITH
    

Fix information

  • Fixed component name

    CICS TS Z/OS V6

  • Fixed component ID

    5655YA100

Applicable component levels

  • R500 PSY UO06463

       UP26/01/21 P F601

  • R600 PSY UO06462

       UP26/01/21 P F601

Fix is available

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[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSGMGV","label":"CICS Transaction Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"6.2","Line of Business":{"code":"LOB70","label":"Z TPS"}}]

Document Information

Modified date:
01 February 2026