RDS Replication Error (Apply Error 1406 / Truncation)
Get 5.6.3 (or later).  As I understand it, these need to be applied to the Replica:

SET GLOBAL innodb_file_format=Barracuda;
SET GLOBAL innodb_file_per_table=ON;
ALTER TABLE tbl ROW_FORMAT=DYNAMIC; -- or COMPRESSED


That should allow you to keep 255 (instead of 191), thereby avoiding the truncation.