A User defined rule is based on a query that runs automatically when opening a particular type of record: constituent, gift, or action. If the record satisfies the query's criteria, a pre-defined message appears to notify the user. The user would like for the pre-defined message to pop up when entering a constituent name into a Gift batch. Since a Gift batch is used to create new gifts, this would require a Gift User defined rule. A Constituent User defined rule will only pop up when opening a constituent record and therefore will not pop up when creating a new gift in Gift batch.