I was able to DL it and extract the XMI and view it with XMIT Manager V3 (also 
available on the CBTTAPPE website) without any problem.

Did you transmit the XMI file to your z/OS system in binary and then RECEIVE it 
to a PDS?

Peter

-----Original Message-----
From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of 
esst...@juno.com
Sent: Thursday, February 20, 2020 12:02 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: How to test SUBSYS=

Has anyone been able to actually view file 364 ?I was able to down load and 
extract the file, but I cant read it ?

---------- Original Message ----------
From: Steve Smith <sasd...@gmail.com>
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: How to test SUBSYS=
Date: Wed, 19 Feb 2020 23:31:08 -0500

There's also the "Control Card Subsystem (CCSS)" on I believe file 364 of the 
CBT.  It's about as simple a DD SUBSYS subsystem as you can get.  It's function 
has been superseded by later developments, but like the other examples, gives 
you the infrastructure to start with.

That said, I don't think it will help with the original problem.  z/OS does not 
do an OBTAIN for a DD SUBSYS file; all it does is pack up whatever DD operands 
are present, and pass them on via SSI function calls to the registered 
subsystem.  If a DSN= is present, it's just another string as far as z/OS is 
concerned.  Anything besides SUBSYS= must pass syntax checking, but nothing 
else.  The problem seems to be in the customer's subsystem, whatever that might 
be.

I'd concoct a test case that did not use your product, but used JCL, ALLOC, or 
bpxwdyn to allocate the file (using SUBSYS=), and see how the FTP goes.
I think it should show your product isn't part of the problem.

My guess is the customer's subsystem is using the SSI functionality to insert 
itself into a more-or-less regular I/O path, and doesn't know how to deal with 
aliased datasets.  I don't know what's issuing the OBTAIN, but it sure won't 
work with an alias.

sas
<Snipped>
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