Report That List What Alerts or Reports or Limitations are integrating a Custom property
On addition you can add on the query the condition with your known customer property to find
Example:
If I Change from
SELECT TOP 1000 * FROM [dbo].[AlertConfigurations] Where [Trigger] like '%CustomProperties%'
To:
SELECT TOP 1000 * FROM [dbo].[AlertConfigurations] WHERE [Trigger] like '%CustomProperties|Region%
It will display for me only the Alerts where the Custom Property Region is integrated on the configuration for the alert.