Oracle Fusion SSO with Multiple Providers of the Same Entity

We have SSO configured between Oracle Fusion and Azure Entra Id where the later is the Idp. Part of the configuration requires creating Enterprise Application at Entra Id, named EnterApp1. Now, we need to add additional new additional Enterprise Application at the same Entra Id tenancy for guest users of external suppliers registered using Supplier Portal, named EnterApp2.

The main reason of this, EnterApp1 authentication is done against UPN while EnterApp2 authentication is done using supplier email, supplier guest account at Entra Id has the format of <supplier_email>#EXT#@xxxxxx.onmicrosoft.com.

Currently at Fusion, we have one configured Identity Provider pointing to EnterApp1. When we tried to define a new one pointing to EnterApp2, we got an error of "Could not create/update identity provider". When checked at community posts, it turned out Fusion identity provider must be unique across the tenancy, entity id.