During an IPL, the CAIRIM task received a CCSR010E message indicating a S878 failure. The task eventually abended with a SA78 Reason Code 00000004

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Issue/Introduction

A CAIRIM S878 can precede a task abend with COMPLETION CODE SA78 REASON CODE 00000004.

Cause

The specified REGION size of 524K for CAS9/CAiRIM execution was too small.  The storage request from (IBM) OPEN processing resulted in an operating system getmain failure.

Environment

z/OS

Resolution

 Increase the REGION size on the EXEC Card of the CAS9 proc.  Although the default REGION as distributed is 2M, specifying REGION=0M resolved this problem. 

Additional Information

https://www.ibm.com/support/knowledgecenter/en/SSLTBW_2.1.0/com.ibm.zos.v2r1.ieae100/regsize.htm