Assume the following scenario:
The settings for subscriptions per user are configured as below:

Users have the following amount of subscriptions:
UserA - 15 Email Subscriptions
UserB - 5 Email Subscriptions
The settings for subscriptions per user are then modified to the following:

The situation is handled as follows:
Subscriptions for UserA and UserB will continue to be sent on schedule, regardless of the above setting. UserA will be unable to create any more subscriptions and will also be unable to modify existing subscriptions. UserA will only be able to modify existing subscriptions once they have deleted existing subscriptions to the point that they are within the above governing setting. UserB will be allowed to create subscriptions up until the point where the above governing settings is exceeded.
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This issue has been logged as Scopus ID 572128.
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