How to migrate machines from ESRS IP CLient to Gateway Maintaining Party ID???

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With the information you are giving me, I am making a few assumptions 

So I am assuming your Goal is; because you can not put a Data Domain on the  ESRS IP Client  Management server, you figure if  you move the VNX and Clariion onto a gateway server and share the gateway witth  Data Domain. However you will lose the function of ESRS IP Client Monitoring process with ConnectEMC, UDoctor,.  The reason for your error, it seems you do not have a  ESRS licence for Data Domain.  This Licence  is at zero dollar part number 753092303ESRS-GW200 which can be obtained through your account Manager.  Now you would have 2  servers a Gateway for Data Domain and a ESRS Monitoring Station for your VNX Clariion Connect Home monitoring which the station acts as a  gateway too.  Contact your Account Manager for further  details.

If the assumption is correct follow my recommendations, if not email me with your site ID, associated with the products , location of products,  and the serail number(s) and a detail explaination, for instance;   How will you monitor your VNX / Clariion products if you migrated  The IP Client products to the Gateway ( You can not share IP Client on the Gateway)

Thank You

Cal Buckley, ESRS Remote Connectivity Products

ICalvin.Buckley@emc.com