The APM-PI connections has been lost since last Thursday, therefore ONLINE INDICATORS will not trigger any alarm in case of failure.
User changed PI side permissions to use trust authentication. Ivara /Bentley APM was trusted but the APM application settings for the ODC service was still set to authenticate using the defined network username. This resulted in rejection on the PI side.
From the enterprise level > Services view > ODC tab. Open the Datasource and click the edit button. Click on the Brwose button beside the "Identifier" field. Remove the username and click ok. Click OK to save the changes to the Datasource. This will force the ODC service using that datasource to use Trust Authentication when accessing PI.
Restart the APM ODC Service on the server for the new credentials to take effect. Check back on the indicators to see if they are returning readings. You may need to wait for the shortest Polling interval to elapse before you start seeing readings.