Mapstruct mapping not working if the field is private

Question

The mapstruct not working if I make Vo object field and POJO objects field as private.

POJO Class:

@Getter
@Setter
@Entity
@Table(name = "items")
public class MtampItem extends AbstractEntity implements Serializable {

@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "item_id")
private Long itemId;

@Column(name = "item_name", nullable = false)
private String itemName;

@Column(name = "item_quantity", nullable = false)
private Integer itemQuantity;

@Column(name = "item_packed_on", nullable = false)
private String itemPackedOn;

@OneToOne(mappedBy = "items")
private MtampPrice price;

@ManyToOne
@JoinColumn(name = "store_id", nullable = false)
private MtampStores stores;

}

@Getter
@Setter
@Entity
@Table(name = "price")
public class MtampPrice extends AbstractEntity implements Serializable {

@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "price_id")
private Long priceId;

@Column(name = "total_price")
private Integer totalPrice;

@Column(name = "currency")
private String currency;

@OneToOne(cascade = CascadeType.ALL)
@JoinColumn(name = "itemId", referencedColumnName = "item_id")
private MtampItem items;

}

@Entity
@Getter
@Setter
@Table(name = "stores")
public class MtampStores extends AbstractEntity implements Serializable {

@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "store_id")
private Long storeId;

@Column(name = "store_name")
private String storeName;

@Column(name = "store_address_1")
private String storeAddress1;

@Column(name = "store_address_2")
private String storeAddress2;

@Column(name = "store_location")
private String storeLocation;

@Column(name = "city")
private String city;

@Column(name = "zip_code")
private String zipcode;

@OneToMany(mappedBy = "stores", cascade = CascadeType.ALL)
private List<MtampItem> items;

 }

VO Object:

@Getter
@Setter
public class Stores implements Serializable {

private static final long serialVersionUID = -9072061519155322550L;

@JsonProperty("store_id")
private Integer storeId;

@JsonProperty("store_name")
private String storeName;

@JsonProperty("store_address1")
private String storeAddress1;

@JsonProperty("store_address2")
private String storeAddress2;

@JsonProperty("store_location")
private String storeLocation;

@JsonProperty("city")
private String city;

@JsonProperty("zipcode")
private String zipcode;

@JsonProperty("items")
private List<Item> items = null;

@JsonProperty("created_by")
private String createdBy;

@JsonProperty("created_on")
private String createdOn;

@JsonProperty("last_modified_by")
private String lastModifiedBy;

@JsonProperty("last_modified_on")
private String lastModifiedOn;

}

@Getter
@Setter
public class Price implements Serializable {

private static final long serialVersionUID = -3893171253167040027L;

@JsonProperty("price_id")
private Integer priceId;

@JsonProperty("total_price")
private Integer totalPrice;

@JsonProperty("currency")
private String currency;

}

@Getter
@Setter
public class Item implements Serializable {

private static final long serialVersionUID = -1712026895026221162L;

@JsonProperty("item_id")
private Integer itemId;

@JsonProperty("item_name")
private String itemName;

@JsonProperty("item_quantity")
private Integer itemQuantity;

@JsonProperty("item_packed_on")
private String itemPackedOn;

@JsonProperty("price")
private Price price;

}

Mapper interface:

@Mapper(componentModel = "spring")
public interface StoreMapper {

MtampStores mapStoreToEntityStores(Stores stores);

Stores mapEntityStoresToStores(MtampStores stores);

 }

When I try to build we are getting the below generated code.

@Component
public class StoreMapperImpl implements StoreMapper {

@Override
public MtampStores mapStoreToEntityStores(Stores stores) {
    if ( stores == null ) {
        return null;
    }

    MtampStores mtampStores = new MtampStores();

    return mtampStores;
}

@Override
public Stores mapEntityStoresToStores(MtampStores stores) {
    if ( stores == null ) {
        return null;
    }

    Stores stores1 = new Stores();

    return stores1;
 }
} 

Issue: When I make the field of VO and POJO class fields as private the generated code not considering the fields for mapping. Can I know where I am making mistake.