To begin with, let's look at the Audit log to analyze the reason for IPP failure. Follow the below steps:
Please navigate to the IPP and click on the Audit logs tab of the IPP.
Click on the View Logs for the failed Datasource in the audit log entries.
You can find the error message like mentioned below:
Some of the common errors and their resolution are listed below:
The refresh token could have expired and it should be updated in the realm/Datasource configuration. Most common scenarios are
Invalid user/service account details in the Realm
The Private key of the MFA should be valid