Replication Server and Replication Agent impose the following constraints on Microsoft SQL Server datatypes:
If you use a version of Replication Server prior to version 12 with Replication Agent for Microsoft SQL Server, you must set the value of the Replication Agent use_rssd configuration parameter to true to avoid problems with the smallint and tinyint datatypes.
If you use a version of Replication Server prior to version 12.5:
char and varchar dataypes that contain more than 255 bytes will be truncated to 255 bytes.
nchar and nvarchar multi-byte character dataypes will be replicated as char or varchar single-byte datatypes.
