While integrating with a partner we realized that in our Okta environment we have same certificate for a default (out-of-the-box) app and a custom SAML 2.0 app.
However in our partners environment, they have separate certificate for each default app; but same certificate for each custom SAML 2.0 app.
Is there any way we can upload our own certificate or can use same certificate for multiple apps?
Also what is a normal scenario: to have separate certificates or to have same for each app? In either case why do we have different behavior in terms of these certificates between our and our partners environment.
The goal here is to have a default app and a custom app for the same service provider to work simultaneously. We can upload one cert to the SP and have both the apps working with IDP inititated flow.