Replica has not been synchronized within the replica set retention period. (Error 3743)
If the retention period expires for a replica, you cannot synchronize changes between the expired replica and the other replicas in the replica set. If a replica does not synchronize with another replica in the set within the retention period, the next time you attempt to synchronize the replica it gets removed from the replica set. The retention period is established when the database is initially made replicable. If you replicate the database by using Replication Manager, Data Access Objects (DAO), or ActiveX Data Objects (ADO), the default retention period is 60 days. If you replicate the database by using Microsoft Access or Briefcase, the default retention period is 1000 days.