A fix is available
APAR status
Closed as program error.
Error description
This was an abend0c4 (abends0c4 ) in module EYU0PSCC + x'30A'. A dump occurred with title: TITLE=EYU9XLRV Dump,..,..,CPUB,CMAS,PSLT,taskid,ASRA,EYU0PSCC From the dump, Kernel Error table summary showed: .. Err_Code Module Offset .. 0C4/AKEA EYU9PS00 0002F502 .. ---/ASRA DFHSR1 000006F4 (Where EYU9PS00 is the load module. The 0c4 occurred in a module within this, EYU0PSCC ). The abend occurred while in Access Register mode. This mode was set to be able to access a PSAD block within a data space (DATASPC1). An Access List Entry Token (ALET) is used to key to a data space. However the ALET value was not updated to reflect the correct data space (DATASPC1) containing the PSAD block to be accessed. The access attempt went to a data space (DATASPC2) whose addressing range did not contain the address used and this tripped the 0c4. In more detail: Both General purpose Register 8 and Access Register 8 are used to address the data space. GR8 is x00000000 00FFFF00 and AR8 is x01010081 (the ALET). To show the ALET values, and address range for the data spaces: IPCS VERBX eyu9dxxx 'RTA,TOP' (where xxx is the CICS TS version, e.g. 610) VERBX Cache Record Id Table - Data Space Summary Type Alet Token Name Low High Pages Private 01010080 AA0000A0 DATASPC1 00001000 01FFF000 00001FFF Private 01010081 AA0001A0 DATASPC2 00001000 00100000 00000100 The PSAD block was in DATASPC1, but the ALET was not x01010080 to be able to address it. PSAD: 00FFFF00 DATASPC1 - Active CICS System Descriptor +0000 00A86EC5 E8E4D7E2 C5E8E4D9 D7E2C1C4 *.y>EYUPSEYURPSAD* 00FFFF00 ..
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All CICSPlex SM Users. * **************************************************************** * PROBLEM DESCRIPTION: While updating CICS System * * Definitions (CSYSDEF) using WUI, the * * CMAS experienced an S0C4 program check * * ABEND in the CPSM RTA long running task * * PSLT. The failure occurred in module * * EYU0PSCC. * **************************************************************** * RECOMMENDATION: The PTFs addressing this APAR should be * * applied to all CPSM regions, and the regions * * should be restarted. The restart of CICS * * regions can be performed in any order. * **************************************************************** The program check occurred when CPSM RTA was processing a CICS system update and navigating internal control blocks in access register mode. Although the code correctly established addressability to the RTA CICS System Descriptor (PSRD), it failed when subsequently accessing the Active CICS System Descriptor (PSAD), which was located in a different RTA data space. This led to an invalid storage reference and a program check.
Problem conclusion
The EYU0PSCC module has been updated to ensure that the access register is loaded with the correct data space ALET value when addressing the Active CICS System Descriptor (PSAD).
Temporary fix
Comments
APAR Information
APAR number
PH70828
Reported component name
CICS TS Z/OS V6
Reported component ID
5655YA100
Reported release
400
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2026-04-08
Closed date
2026-05-12
Last modified date
2026-05-14
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UO07778 UO07779 UO07780
Modules/Macros
EYU0PSCC
Fix information
Fixed component name
CICS TS Z/OS V6
Fixed component ID
5655YA100
Applicable component levels
R40M PSY UO07780
UP26/05/14 I 1000
R50M PSY UO07779
UP26/05/14 I 1000
R60M PSY UO07778
UP26/05/14 I 1000
Fix is available
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Document Information
Modified date:
14 May 2026