(1) In application development, to move a part up one level in the project hierarchy.
(2) In ILE, to convert an unhandled exception into a new exception with a different meaning. The new exception is passed on to the next exception handler.
(3) To copy replication definitions for subscription sets or registered sources from one database to another database, without registering the sources again or creating the subscription sets again.
(4) To change a condition to a different one using a condition handler. A condition handler routine promotes a condition because the error needs to be handled in a way other than that suggested by the original condition.
(5) To add a logical data unit to cache memory.