Oracle Error Message
PLS-00639: NCHAR/NVARCHAR2 cannot be byte length semantics
Reason for the Error
NCHAR/NVARCHAR can only be codepoint length sematics. BYTE qualifiers used with NCHAR is illegal: nc NCHAR(7 BYTE); name NVARCHAR2(10 byte);
Solution
Remove BYTE qualifier to make it as codepoint length semantics