After creating Notification entries they don't appear in the list of created entries. Users with the Administrator Role should be able to see all Notification entries from all users.
The user that created the entries but can't see them has the Administrator Role assigned.
The user that can see all entries also has the Administrator Role assigned.
An unknown problem took place at an unknown time that caused users to be out of sync between the Event Manager and Performance Center MySql Databases.
The Performance Center netqosportal DB contains users in the user_definitions table. The Event Manager Data Source synchronizes those users to the same table in its DB, the em DB.
If the user creating the Notification entries is missing an entry in the em DB user_definitions table, this behavior would be the result.
All supported CA Performance Management releases
Confirm the user_definitions tables are not in sync with each other to validate that is the cause.
As root or sudo root user that owns the CAPC installation go to (default install path):
If the Notifications continue to be missing something else may be broken. Please engage CA Support for further assistance.