Collision handling happens at the CDDS level; when defining your CDDS you must specify which collision mode you want to use. There are two ways to handle collisions, automatically or manually. Each method has advantages and disadvantages. Automatic resolution takes less time but can produce unexpected results. Manual resolution can give you more control and, in some cases, is the only way you can resolve a conflict.

All collisions are counted as errors; they cause the Replicator Server to log the error, increase the error count, and send e-mail to the mail notification list. If the collision is resolved, the Replicator Server continues processing. If the collision is not resolved, the Replicator Server behaves in accordance with the error mode setting.