Consider the following scenario:
You use cache snapshots for a report in Microsoft SQL Server 2016 Reporting Services (SSRS 2016).
You enable the "Create cache snapshots on a schedule" option for the report.
You create a new subscription in which the schedule option is set to "When the report data is updated (by the cache snapshot schedule)".
In this scenario, when you try to modify the subscription later, you will find that the schedule was changed to "Report-specific schedule" instead of "When the report data is updated (by the cache snapshot schedule)".
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
This issue is fixed in the following cumulative update for SQL Server:
About cumulative updates for SQL Server:
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:
Learn about the terminology that Microsoft uses to describe software updates.