Getting error while switching from R18.1 instance to R18.0 instance of Endevor

Products

• Endevor
• Endevor Natural Integration
• Endevor - ECLIPSE Plugin
• Endevor - Enterprise Workbench

Issue/Introduction

in process of upgrading our Endevor from SCM Version 18.0.xx to SCM Version 18.1, while switching from one instance/release to other we are getting below error and we end with a hung up session. 

CSV003I REQUESTED MODULE *CIRB*$P NOT FOUND              
 CSV028I ABEND806-04  JOBNAME=OP23052   STEPNAME=$OPRTSO  
 IEA995I SYMPTOM DUMP OUTPUT                               
 SYSTEM COMPLETION CODE=806  REASON CODE=00000004         
  TIME=09.19.18  SEQ=23983  CPU=0000  ASID=0123           
  PSW AT TIME OF ERROR  470C1000   811B9472  ILC 2  INTC 0D
    NO ACTIVE MODULE FOUND                                
    NAME=UNKNOWN                                          
    DATA AT PSW  011B946C - 8400181E  0A0D18FB  180C181D  
    GR 0: 00001F00   1: 84806000                          
       2: 00000000   3: 00000000                          
       4: 00000000   5: 00980D98                          
       6: 000000FF   7: 00000000                          
       8: 7F4C5050   9: 011B9998                          
       A: 00000000   B: 00000000                          
       C: 00000000   D: 7F4C5050                           
       E: 84806000   F: 00000004                          
  END OF SYMPTOM DUMP                                     
ABEND U0001 OCCURRED IN PROGRAM BC1PSM10                                     
CALL FROM $FUNC=CALLTHRU EPA=1E4BE328 R1=000967E8 R14=9E4BE542 STACK=00096790 CSECT=BC1PSM10  08/20/15                                                      
CALL FROM C FNC=MAIN(PINITC#) EPA=00170490 R1=000BA0C8 R14=801705B4 STACK=0BA028                                                                        
CALL FROM C FNC=$MAINO EPA=00172AC2 R1=000B8140 R14=801736CA STACK=0B8028                                                                       
CALL FROM $FUNC=XPCXOPT  EPA=0016FB88 R1=000966D8 R14=8016FC20 STACK=00096678 CSECT=XPCXOPT   08/20/15                                                      
CALL FROM $FUNC=CENVCALL EPA=1E4BE1E0 R1=000965A0 R14=9E4BE282 STACK=00096548
***
CALL FROM $FUNC=BC1PSM10 EPA=1E4BE150 R1=000952A8 R14=9E4BE1B0 STACK=00095248
CALL FROM PROGM=BC1PSM10 ASM DT=08/20/15 VERS=0003 EPA=9E4BE040 RET=9E4BE144 
 ***                

                                                                                                                                                                             

Environment

Release : 18.1

Component : CA Endevor Software Change Manager

Resolution

In many cases, it is necessary to run two different releases of CA Endevor SCM at the same time. This can be done by adding the CSIQAUTH/CSIQAUTU and CSIQLOAD data sets to the respective STEPLIB and CONLIB statements in a test TSO logon procedure. Member SCMM@LIB in the CSIQSENU and CSIQJCL installation libraries were tailored by BC1JJB03 of the installation process to point to your STEPLIB/CONLIB concatenations. The Skeleton JCL members installed imbed CSIQJCL member SCMM@LIB to point to the STEPLIB/CONLIB concatenations. Stand-alone JCL members include CSIQJCL member SCMM@LIB for your STEPLIB/CONLIB concatenations. The CSIQJCL member SCMM@LIB can be copied to a JES PROCLIB or a JCLLIB statement can be added to each stand-alone JCL member to point to the library where this member resides.

Different releases (for example 18.0.12 and 18.1) cannot be accessed in the same TSO/ISPF session. After working with one release, before you can work with the other, log off TSO and log on again, making sure to change the logon procedures. If you do not change your logon procedures, a message indicates an incompatible C1DEFLTS Table