A fix is available
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
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