a few questions about Portal and user management:
1. Can there be user management synchronization setup between the Portal DB and external IdP's DB?
2. Can developer invitation through the portal synchronize with or notify external IdP’s DB?
3. Can Portal create users via PAPI with approved status?
Without the above the IdP-based authentication in Portal is quite useless.
his is not possible as far as i know if you setup a external IDP the users acces ismaintained in the IDP not in the portal database.
Not sure what you expect here ? the user is maintained in the idp .
I need to look into this normally the user signs up and it needs to be approved.