HTTP 500 errors when opening Instance Manager - R3

Symptom

HTTP 500 errors when opening Instance Manager

Cause

A pending scheduled job exists that does not have the SI_NEXTRUNTIME property.

Resolution

To determine which object may be the cause of the error, do the following steps:

1. Enable tracing on the CMS without requiring a restart. See SAP note 1335757
2. Open Instance Manager and receive the HTTP 500 error
3. Stop the CMS tracing.
4. In the resulting log file, search for SI_NEXTRUNTIME. Copy the query and run it in Query Builder.
5. Search through the Query Builder results to see whether there is a scheduled object that has a blank SI_NEXTRUNTIME

In the Central Management Console(CMC), delete the pending instance that is missing the SI_NEXTRUNTIME.

Open Instance Manager to verify the error is resolved.