Replication Server and Replication Agent impose the following constraints on Informix datatypes:
Informix blob, clob, and lvarchar datatypes that contain more than 2GB will be truncated to 2GB.
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.