Multiple clients to One Portal

Dear All,
I would like to connect two different client on the ABAP system (ABC_100 and ABC_200) to the Portal (7.3 SP11) XYZ .
I understand that it's technically possible but do I need to take any further action from the SSO perspective as it will have a same CN name .
Appreciate if you can list out brief steps . Thanks in advance .
Regards
Sam

You will have to configure SSO in both ABAP clients meaning uploading of the portal certificate and adding it to the ACL for Logon Tickets. The bigger task is to configure the portal system landscape and objects referencing it, e.g. you won't be able to use SAP_ECC_HumanResources default system alias but you will have to come up with your own system aliases and configure the referencing objects accordingly. Another option is to use Dynamic System Resolution.

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Installation guide:
http://service.sap.com/~form/sapnet?_SHORTKEY=01100035870000718044&_OBJECT=011000358700000291922009E
page 37:
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http://download-west.oracle.com/docs/cd/B10464_01/portal.904/b10356/cg_advnc.htm#1040267

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I am wondering if I could run a portal (7.00) and connect this to a HCM backend with ECC 6 EhP2, thus requiring the BPs and content with WebDynpro/Java technology to be deployed in the portal and simultaneously connect to another HCM backend based on ECC6 EhP5, thus requiring the necessary BPs and content with WebDynpro/ABAP technology in the portal
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