I can’t delete a rule entity using the Jpa repository. Neither using deleteById() nor delete();

@Getter
@Setter
@Entity
@Table(name = "group_rule")
public class Rule {    
    @Id
    @Column(name = "id")    
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Integer id;
    
    @ManyToOne(fetch = FetchType.LAZY)    
    @JoinColumn(name = "technical_attribute_id", nullable = false)
    private TechnicalAttribute technicalAttribute;
    
    @Basic    
    @Column(name = "order_value")
    private Integer order;
    
    @Basic    
    @Column(name = "operator_code")
    private String operatorCode;
    
    @Basic    
    @Column(name = "parameters")
    private String parameters;
    
    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "checkpoint_group_id", referencedColumnName = "id")    
    private Group group;
}

Are there any relationships (or other reasons) why I can’t delete the entity?