Common Services for z/OS r14.1 customers upgrading to any type of a z12, z13, or z14 processor may receive a "CATHW03W Machine type xxxx unknown" message issued from the CA Master Address Space during an IPL.

Document ID : KB000031641
Last Modified Date : 07/03/2019
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During an IPL, and as the CA Master Address Space is initialized, message  "CATHW03W Machine type xxxx unknown" may be notices after an upgrade to any of these IBM zEnterprise machine types.

  • zEC12
  • zBC12
  • z13s
  • z14
  • z14R1


Included within the the CA Master Address Space is a processor table; a feature setting that other CA products or solutions can potentially check and optimize their code path depending upon the processor capabilities.  This processor table plays no part in the normal functionality of CAMASTER and despite any of these errors being issued, the CA Master Address Space will successfully initialize and continue to operate routinely.  
If issued, and depending upon the machine type, customers will receive one of the following messages:
  • zEC12 -   CATHW03W machine type 2827 unknown.
  • zBC12 -   CATHW03W machine type 2828 unknown.
  • z13 -        CATHW03W machine type 2964 unknown.
  • z13s -      CATHW03W machine type 2965 unknown. 
  • z14 -        CATHW03W machine type 3906 unknown. 
  • z14R1 -   CATHW03W machine type 3907 unknown  
CA Common Services for z/OS r14.1 executing on any type of z12, z13, or z14 processor.
As the specific machine type is not included in the CAMASTER processor table, apply the appropriate maintenance based upon the machine type as listed:  
  • RO52997 corrects the "CATHW03W machine type 2827 unknown" message for zEC12 machines.  
  • RO64367 corrects the "CATHW03W machine type 2828 unknown" message for zBC12 machines.  
  • RO75660 corrects the "CATHW03W machine type 2964 unknown" message for z13 machines.
  • RO88417 corrects the "CATHW03W machine type 2965 unknown" message for z13s machines.
  • RO96886 corrects the "CATHW03W machine type 3906 or 3907 unknown" message for z14 or z14R1 machines. This fix also changes the destination of the CATHW03W message to LOGREC.  However, going forward, when new machine types are introduced, any subsequent maintenance will add the values to the processor table.      
There is additional maintenance to be applied if upgrading to a z13 or z14 processor.  Although this maintenance is not related to the processor table or the CATHW03W message, depending upon the processor type, apply the following:  
  • For full compatibility with a z13 or z13s processor, RO82009 is required.  This fix will prevent a possible S0C2 abend in CAMSADRV and add support for new functionality and performance improvements provided to a z13 processor after applying IBM APAR OA46291.
  • For full compatibility with a z14 or z14R1 processor, SO00986 is a required hyper PTF.   This fix prevents unpredictable results due to CCIMVS program CAS9VTAM not clearing AR15 after storage macros.  On a z14 processor, STORAGE OBTAIN/RELEASE macro's return the ALET of the RSM address space in AR15 which could cause problems in subsequent code that switches into AR mode.
NOTE:  An IPL is required to implement each fix once it is applied.  The CA Master Address Space is initialized during an IPL and remains active for the life of the IPL.  After initialization, CAMASTER uses minimal CPU, and cannot be stopped or restarted. 
Additional Information:
A detailed description of the CA Master component of CA Common Services for z/OS can be found under  "Address Space" in either of the following: You may also refer to KB000111881 for additonal details on RO96886 and a z14R1 machine