Message Oracle ORA-28331 - encrypted column size too long for its data type

ERRORencrypted column size too long for its data type
CAUSEcolumn was encrypted and for VARCHAR2, the length specified was > 3932; for CHAR, the length specified was > 1932; for NVARCHAR2, the length specified was > 1966; for NCHAR, the length specified was > 966;
ACTIONReduce the column size.