How to handle embedded composite key?

I have a table called watchlist that consists of only two fields, symbol and name. The combination is unique. I'm getting hibernate error:

> "Repeated column in mapping for entity"

error and I can't figure out why.

I have created a WatchlistId class like this:

@Embeddable
public class WatchlistId implements Serializable {
	@Column(name="symbol")
	private String symbol;
	
	@Column(name="name")
	private String name;
	
	WatchlistId() {		
	}

	WatchlistId(String symbol, String name) {
		this.symbol = symbol;
		this.name = name;
	}
//getters and setters
@Override
    public boolean equals(Object o) {
        if (this == o) return true;
 
        if (o == null || getClass() != o.getClass()) return false;
 
        WatchlistId that = (WatchlistId) o;
        return Objects.equals(symbol, that.symbol) && Objects.equals(name, that.name);
    }
 
    @Override
    public int hashCode() {
        return Objects.hash(symbol, name);
    }	

The Watchlist class looks like this:

@Entity
@Table(name = "watchlist")
public class Watchlist {
	@EmbeddedId
	public WatchlistId watchlistId;
	
	private String symbol;
	private String name;
 
	public Watchlist() {	  
	}
	
	public Watchlist(WatchlistId watchlistId, String symbol, String name) {
		this.watchlistId = watchlistId;
		this.symbol = symbol;
	    this.name = name;
	}
	
	public WatchlistId getWatchlistId() {
		return watchlistId;
	}
	public void setWatchlistId(WatchlistId watchlistId) {
		this.watchlistId = watchlistId;
	}
}

The repository looks like this:

@Repository
public interface WatchlistRepository extends JpaRepository<Watchlist, WatchlistId>{
    @Query(value="select * from watchlist w where (name = :w.watchlistId.name)", nativeQuery = true)
    List<Watchlist> getWatchlist(@Param("name") String name);

	@Query(value="insert into watchlist w (symbol,name) values (:watchlist.watchlistId.symbol,:watchlist.watchlistId.name)", nativeQuery = true)
	String addSymbolToWatchlist(@Param("watchlist") Watchlist watchlist);
}

When using @Embeddable, the fields from the embeddable class are automatically added to the table, so you get duplicates.

Thus, you need to remove symbol and name fields and use them from WatchlistId member:

@Entity
@Table(name = "watchlist")
public class Watchlist {
    @EmbeddedId
    public WatchlistId watchlistId;
    
    public String getSymbol(){
        return watchlistId.getSymbol();
    }
    
    public String getName(){
        return watchlistId.getName();
    }
}