Cannot convert %1 to a %2

Error constant SQLE_CONVERSION_ERROR
ODBC 2 State 07006
ODBC 3 State 07006
Parameter 1 The value that could not be converted.
Parameter 2 The name of the type for the conversion.
Severity 16
SQLCODE –157
SQLSTATE 53018
Sybase error code 257
Probable cause

An error occurred while trying to convert a value to another data type.