Cannot convert between requested character set '%1' and database character set '%2'

Error constant SQLE_FAILED_TO_START_CONVERTER
ODBC 2 State ERROR
ODBC 3 State ERROR
Parameter 1 The name of the requested character set encoding.
Parameter 2 The name of the database character set encoding.
Severity 16
SQLCODE –870
SQLSTATE WC002
Sybase error code 13874
Probable cause

The server is unable to convert between the connection character set that was specified and the database character set. This could happen when the dbicu and dbicudt DLLs are not installed.