A SQL Remote subscription is synchronized when the data in the remote database is consistent with that in the consolidated database, so that publication updates sent
from the consolidated database to the remote database will not result in conflicts and errors.
To synchronize a subscription, a copy of the data in the publication at the consolidated database is sent to the remote database.
The SYNCHRONIZE SUBSCRIPTION statement does this through the message system. It is recommended that where possible you use
the database extraction utility (dbxtract) instead to synchronize subscriptions without using a message system.