ACF2 Unable to CERTMAP map a user to a certificate R_Usermap RC=8/8:8

Products

• ACF2

Issue/Introduction

Trying to authenticate a user in Zowe with a client certificate but keep receiving this error from OMVS SECTRACE Security Trace from R_Usermap :  

2023/135 16:39:51.27  CAS2205I REQUEST=R_Usermap       ,EXIT=PRE ,RC=N/A          
2023/135 16:39:51.30  CAS2206I USER=ZOWEUSR,UID=222       ,GROUP=ZOWEDMIN,GID=   
2023/135 16:39:51.30  CAS2206I Function=Kerbname/cert to User ID,Option=0   ,MF   
2023/135 16:39:51.30  CAS2206I Certificate=YES,Appluserid=                        
2023/135 16:39:51.30  CAS2205I REQUEST=R_Usermap       ,EXIT=POST,RC=8/8:8        
2023/135 16:39:51.30  CAS2205I REQUEST=CHECK_ACCESS    ,EXIT=PRE ,RC=N/A          

 

Environment

Release : 16.0

Resolution

ACF2 apar LU08072 addresses the problem with R_Usermap RC=8/8:8. 

APAR PROBLEM DESCRIPTION:
The R_usermap callable service can map a Linux ID to a mainframe userid or a mainframe userid to a Linux ID.  This is no longer working.

Note that the CERTMAP mapping error is not limited to Linux.