Thanks

Its a user abend and not sure what is it missing



On Sun, 24 May 2026, 14:43 Rob Scott, <
[email protected]> wrote:

> Peter
>
> The only possible link here is that during initialization MXI 4.3 does a
> EZASMI call to get the local TCP/IP host and ipaddr.
>
> I think the most likely thing is that MXI is a victim or innocent
> bystander to a pre-existing issue that affects OMVS or TCPIP.
>
> By the way, all those MXI commands you quoted exist in SDSF.
>
> Rob
>
> Sent from Outlook for Android<https://aka.ms/AAb9ysg>
> ________________________________
> From: IBM Mainframe Discussion List <[email protected]> on behalf
> of Peter <[email protected]>
> Sent: Sunday, May 24, 2026 5:39:35 AM
> To: [email protected] <[email protected]>
> Subject: Re: MXI for zOS 3.1
>
> EXTERNAL EMAIL
>
>
>
>
> Hello Rob
>
> I have deployed RSU2601 on zos 3.1.
>
> Whenever I am trying to use MXI features like APF, LNK, LPA,LPD .Post that
> when I come out of the MXI panel and try to use TSO NETSTAT or TSO OMVS , I
> receive
>
> CEE5101C DURING INITIALIZATION, the callable service BPX1MSS failed. The
> System return code was 0000000156, the reason code was 0D070200. finally it
> ends with U4093 Reason code 90
>
>
> This error message comes up immediately after I exit from MXI panel.
>
> Not sure if MXI is causing this but I have opened a case and still IBM has
> not found the offending module yet.
>
> Not sure what SLIP traps would help in this scenario
>
> I have a valid OMVS UID, GID. Infact we never got this error prior to
> RSU2601 within zos 3.1 but not sure what changed.
>
> Definition wise all the privileges my racf ID has, but only the difference
> what I see is RSU2601 which was rolled out and post that we are seeing this
> behaviour
>
>
>
> Any pointers are much appreciated
>
> Regards
> Peter
>
>
> On Tue, 12 May 2026, 12:42 Rob Scott, <
> [email protected]> wrote:
>
> > Peter,
> >
> > If you are referring to the freeware MXI 4.3, then it will probably work
> > just fine in the most part.
> >
> > Please note that the code has not been updated for over 20 years and is
> > not currently supported by myself (or Rocket Software). It also has no
> > awareness of 64-bit memory in any fashion (either reporting on it or
> > exploiting it).
> >
> > If you are referring to the licensed version of MXI 6.2, then there is
> > maintenance that has added support for both z/OS 3.1 and z/OS 3.2.
> >
> > The licensed version of MXI 6.2 has been functionally stabilized, so
> there
> > will be no enhancements coming in the future.
> >
> > Most of the functionality of MXI has now been incorporated into SDSF for
> > z/OS and I would encourage any existing MXI users to migrate to using
> SDSF
> > instead.
> >
> > Rob Scott
> > Rocket Software
> > (Original author of MXI)
> >
> > ________________________________
> > From: IBM Mainframe Discussion List <[email protected]> on behalf
> > of Peter <[email protected]>
> > Sent: Tuesday, May 12, 2026 7:02 AM
> > To: [email protected] <[email protected]>
> > Subject: MXI for zOS 3.1
> >
> > EXTERNAL EMAIL
> >
> >
> >
> >
> >
> > Hello
> >
> > Is there a new release for MXI which can work effectively with zOS 3.1 ?
> >
> > Peter
> >
> > ----------------------------------------------------------------------
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