The OP said his error message was IEC334I.  I read the description and 
recommended action, and it looks to me as if he has two or more devices, 
regardless of their device numbers, that have the same CCA and DDC rather than 
a duplicate SSID.  Here is the operative sentence:  "The identified Subsystem 
already has a device configured with the same Channel Connection Address (CCA) 
and Director-to-Device Connection address (DDC)." [MVS System Messages Volume 7 
(IEB-IEE); SA22-7637-15]  At any rate, there is something defined incorrectly 
in his configuration.

Bill Fairchild

Software Developer 
Rocket Software
275 Grove Street * Newton, MA 02466-2272 * USA
Tel: +1.617.614.4503 * Mobile: +1.508.341.1715
Email: [email protected] 
Web: www.rocketsoftware.com

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of 
Bruce Hewson
Sent: Friday, August 07, 2009 12:47 AM
To: [email protected]
Subject: Re: Problem with I/O

Hello Michele,

two possible reasons for duplicate SSID.

1. two different Control Units have been assigned the same SSID. We got this 
because two of our disk suppliers used different naming standards, and we 
hadn't been checking close enough.

2. you have miscabled some connections to multiple frames. Check all cables 
actually go where you expect.

Regards
Bruce Hewson

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