I have definitely seen it working with multiple SSO to a single org. This was Salesforce & Entra. There used to be a limitation / restriction around type but I believe this has now been removed.
I have noticed when I created an SSO integration to entra - I had issues with entra generating the URLs in the wrong format.
Specifically in Entra the federation XML should be :
https://login.microsoftonline.com/<TENANT_ID>/federationmetadata/2007-06/federationmetadata.xml?appid=<APPLICATION_ID>
And the 3 x URLs in genesys:
https://<TENANT_ID>.ciamlogin.com/<TENANT_ID>/ (saml2 added for sign on / signout URI)
This could well be as we are using a small scale entra for a dev system rather - but it did cause some issues!
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Richard Robinson
Senior Technical Account Manager
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