Create a group with a name longer than 60 characters. Then try to add it to a notification scheme. You get the following error (on the screen as well as in the logs):

org.ofbiz.core.entity.GenericDataSourceException: SQL Exception while executing the following:INSERT INTO notification (ID, SCHEME, 
EVENT, EVENT_TYPE_ID, TEMPLATE_ID, notif_type, notif_parameter) VALUES (?, ?, ?, ?, ?, ?, ?) (Data truncation: Data too long for 
column 'notif_parameter' at row 1)
        at org.ofbiz.core.entity.jdbc.SQLProcessor.executeUpdate(SQLProcessor.java:375)

The problem is that the notif_parameter column of the notification table is a varchar(60), and the groupname is stored directly in this field.
The groupname field of the groupbase table is varchar(255).

This bug is compounded by the fact that you can't simply change a group name (to reduce it to less than 60 characters).

A support customer has this issue in 3.6.5 Enterprise running on Postgres. I have reproduced it in 3.10.1 Enterprise running MySQL.