diff --git a/v5/client.go b/v5/client.go
index 5f34ae0..3746a31 100644
--- a/v5/client.go
+++ b/v5/client.go
@@ -2062,3 +2062,638 @@ func (c *Client) StaticticsUpdate() (SuccessfulResponse, int, errs.Failure) {
 
 	return resp, status, err
 }
+
+// Getting of the cost list, adequate for the given filter
+//
+// Example:
+//
+// 	var client = v5.New("https://demo.url", "09jIJ")
+//
+//	data, status, err := client.Costs(CostsRequest{
+//		Filter: CostsFilter{
+//			Ids: []string{"1","2","3"},
+//			MinSumm: "1000"
+//		},
+//	})
+//
+// 	if err.ErrorMsg != "" {
+// 		fmt.Printf("%v", err.ErrorMsg)
+// 	}
+//
+// 	if status >= http.StatusBadRequest {
+// 		fmt.Printf("%v", err.ErrorMsg)
+// 	}
+//
+// 	for _, value := range data.Costs {
+// 		fmt.Printf("%v\n", value.Summ)
+// 	}
+func (c *Client) Costs(costs CostsRequest) (CostsResponse, int, ErrorResponse) {
+	var resp CostsResponse
+
+	params, _ := query.Values(costs)
+
+	data, status, err := c.GetRequest(fmt.Sprintf("/costs?%s", params.Encode()))
+
+	if err.ErrorMsg != "" {
+		return resp, status, err
+	}
+
+	json.Unmarshal(data, &resp)
+
+	return resp, status, err
+}
+
+// Creation of the cost
+//
+// Example:
+//
+// 	var client = v5.New("https://demo.url", "09jIJ")
+//
+//	data, status, err := client.CostCreate(
+// 		v5.CostRecord{
+//			DateFrom:  "2012-12-12",
+//			DateTo:    "2012-12-12",
+//			Summ:      12,
+//			CostItem:  "calculation-of-costs",
+//			Order: Order{
+// 				Number: "1"
+// 			},
+// 			Sites:    []string{"store"},
+//		},
+//		"store"
+// 	)
+//
+// 	if err.ErrorMsg != "" {
+// 		fmt.Printf("%v", err.ErrorMsg)
+// 	}
+//
+// 	if status >= http.StatusBadRequest {
+// 		fmt.Printf("%v", err.ErrorMsg)
+// 	}
+//
+// 	If data.Success == true {
+// 		fmt.Printf("%v", data.ID)
+// 	}
+func (c *Client) CostCreate(cost CostRecord, site ...string) (CreateResponse, int, ErrorResponse) {
+	var resp CreateResponse
+
+	costJSON, _ := json.Marshal(&cost)
+
+	p := url.Values{
+		"cost": {string(costJSON[:])},
+	}
+
+	fillSite(&p, site)
+
+	data, status, err := c.PostRequest("/costs/create", p)
+	if err.ErrorMsg != "" {
+		return resp, status, err
+	}
+
+	json.Unmarshal(data, &resp)
+
+	return resp, status, err
+}
+
+// Method allows to remove batch up to 50 costs.
+//
+// Example:
+//
+// 	var client = v5.New("https://demo.url", "09jIJ")
+//
+//	data, status, err := client.client.CostsDelete([]int{1, 2, 3, 48, 49, 50})
+//
+// 	if err.ErrorMsg != "" {
+// 		fmt.Printf("%v", err.ErrorMsg)
+// 	}
+//
+// 	if status >= http.StatusBadRequest {
+// 		fmt.Printf("%v", err.ErrorMsg)
+// 	}
+//
+// 	If data.Success == true {
+// 		fmt.Printf("Not removed costs: %v", data.NotRemovedIds)
+// 	}
+func (c *Client) CostsDelete(ids []int) (CostsDeleteResponse, int, ErrorResponse) {
+	var resp CostsDeleteResponse
+
+	costJSON, _ := json.Marshal(&ids)
+
+	p := url.Values{
+		"ids": {string(costJSON[:])},
+	}
+
+	data, status, err := c.PostRequest("/costs/delete", p)
+	if err.ErrorMsg != "" {
+		return resp, status, err
+	}
+
+	json.Unmarshal(data, &resp)
+
+	return resp, status, err
+}
+
+// Method allows to upload as packet up to 50 costs.
+//
+// Example:
+//
+// 	var client = v5.New("https://demo.url", "09jIJ")
+//
+//	data, status, err := client.CostCreate([]v5.CostRecord{
+//		{
+//			DateFrom:  "2012-12-12",
+//			DateTo:    "2012-12-12",
+//			Summ:      12,
+//			CostItem:  "calculation-of-costs",
+//			Order: Order{
+// 				Number: "1"
+// 			},
+// 			Sites:    []string{"store"},
+//		},
+//		{
+//			DateFrom:  "2012-12-13",
+//			DateTo:    "2012-12-13",
+//			Summ:      13,
+//			CostItem:  "seo",
+//		}
+// 	})
+//
+// 	if err.ErrorMsg != "" {
+// 		fmt.Printf("%v", err.ErrorMsg)
+// 	}
+//
+// 	if status >= http.StatusBadRequest {
+// 		fmt.Printf("%v", err.ErrorMsg)
+// 	}
+//
+// 	If data.Success == true {
+// 		fmt.Printf("Uploaded costs: %v", data.UploadedCosts)
+// 	}
+func (c *Client) CostsUpload(cost []CostRecord) (CostsUploadResponse, int, ErrorResponse) {
+	var resp CostsUploadResponse
+
+	costJSON, _ := json.Marshal(&cost)
+
+	p := url.Values{
+		"costs": {string(costJSON[:])},
+	}
+
+	data, status, err := c.PostRequest("/costs/upload", p)
+	if err.ErrorMsg != "" {
+		return resp, status, err
+	}
+
+	json.Unmarshal(data, &resp)
+
+	return resp, status, err
+}
+
+// Getting of cost information
+//
+// Example:
+//
+// 	var client = v5.New("https://demo.url", "09jIJ")
+//
+//	data, status, err := client.Cost(1)
+//
+// 	if err.ErrorMsg != "" {
+// 		fmt.Printf("%v", err.ErrorMsg)
+// 	}
+//
+// 	if status >= http.StatusBadRequest {
+// 		fmt.Printf("%v", err.ErrorMsg)
+// 	}
+//
+// 	If data.Success == true {
+// 		fmt.Printf("%v", data.Cost)
+// 	}
+func (c *Client) Cost(id int) (CostResponse, int, ErrorResponse) {
+	var resp CostResponse
+
+	data, status, err := c.GetRequest(fmt.Sprintf("/costs/%d", id))
+
+	if err.ErrorMsg != "" {
+		return resp, status, err
+	}
+
+	json.Unmarshal(data, &resp)
+
+	return resp, status, err
+}
+
+// Cost removing
+//
+// Example:
+//
+// 	var client = v5.New("https://demo.url", "09jIJ")
+//
+//	data, status, err := client.CostDelete(1)
+//
+// 	if err.ErrorMsg != "" {
+// 		fmt.Printf("%v", err.ErrorMsg)
+// 	}
+//
+// 	if status >= http.StatusBadRequest {
+// 		fmt.Printf("%v", err.ErrorMsg)
+// 	}
+func (c *Client) CostDelete(id int) (SuccessfulResponse, int, ErrorResponse) {
+	var resp SuccessfulResponse
+
+	costJSON, _ := json.Marshal(&id)
+
+	p := url.Values{
+		"costs": {string(costJSON[:])},
+	}
+
+	data, status, err := c.PostRequest(fmt.Sprintf("/costs/%d/delete", id), p)
+
+	if err.ErrorMsg != "" {
+		return resp, status, err
+	}
+
+	json.Unmarshal(data, &resp)
+
+	return resp, status, err
+}
+
+// Cost editing
+//
+// Example:
+//
+// 	var client = v5.New("https://demo.url", "09jIJ")
+//
+//	data, status, err := client.CostEdit(1, v5.Cost{
+//		DateFrom:  "2012-12-12",
+//		DateTo:    "2018-12-13",
+//		Summ:      321,
+//		CostItem:  "seo",
+//	})
+//
+// 	if err.ErrorMsg != "" {
+// 		fmt.Printf("%v", err.ErrorMsg)
+// 	}
+//
+// 	if status >= http.StatusBadRequest {
+// 		fmt.Printf("%v", err.ErrorMsg)
+// 	}
+//
+// 	If data.Success == true {
+// 		fmt.Printf("%v", data.Id)
+// 	}
+func (c *Client) CostEdit(id int, cost CostRecord, site ...string) (CreateResponse, int, ErrorResponse) {
+	var resp CreateResponse
+
+	costJSON, _ := json.Marshal(&cost)
+
+	p := url.Values{
+		"cost": {string(costJSON[:])},
+	}
+
+	fillSite(&p, site)
+
+	data, status, err := c.PostRequest(fmt.Sprintf("/costs/%d/edit", id), p)
+	if err.ErrorMsg != "" {
+		return resp, status, err
+	}
+
+	json.Unmarshal(data, &resp)
+
+	return resp, status, err
+}
+
+// Getting the list of custom fields
+//
+// Example:
+//
+// 	var client = v5.New("https://demo.url", "09jIJ")
+//
+//	data, status, err := client.CustomFields(v5.CustomFieldsRequest{
+//		Type: "string",
+// 		Entity: "customer",
+//	})
+//
+// 	if err.ErrorMsg != "" {
+// 		fmt.Printf("%v", err.ErrorMsg)
+// 	}
+//
+// 	if status >= http.StatusBadRequest {
+// 		fmt.Printf("%v", err.ErrorMsg)
+// 	}
+//
+// 	for _, value := range data.CustomFields {
+//		fmt.Printf("%v\n", value)
+//	}
+func (c *Client) CustomFields(customFields CustomFieldsRequest) (CustomFieldsResponse, int, ErrorResponse) {
+	var resp CustomFieldsResponse
+
+	params, _ := query.Values(customFields)
+
+	data, status, err := c.GetRequest(fmt.Sprintf("/custom-fields?%s", params.Encode()))
+
+	if err.ErrorMsg != "" {
+		return resp, status, err
+	}
+
+	json.Unmarshal(data, &resp)
+
+	return resp, status, err
+}
+
+// Getting the list of custom directory
+//
+// Example:
+//
+//	var client = v5.New("https://demo.url", "09jIJ")
+//
+//	data, status, err := client.CustomDictionaries(v5.CustomDictionariesRequest{
+//		Filter: v5.CustomDictionariesFilter{
+//			Name: "Dictionary-1",
+//		},
+//	})
+//
+//	if err.ErrorMsg != "" {
+//		fmt.Printf("%v", err.ErrorMsg)
+//	}
+//
+//	if status >= http.StatusBadRequest {
+//		fmt.Printf("%v", err.ErrorMsg)
+//	}
+//
+//	for _, value := range data.CustomDictionaries {
+//		fmt.Printf("%v\n", value.Elements)
+//	}
+func (c *Client) CustomDictionaries(customDictionaries CustomDictionariesRequest) (CustomDictionariesResponse, int, ErrorResponse) {
+	var resp CustomDictionariesResponse
+
+	params, _ := query.Values(customDictionaries)
+
+	data, status, err := c.GetRequest(fmt.Sprintf("/custom-fields/dictionaries?%s", params.Encode()))
+
+	if err.ErrorMsg != "" {
+		return resp, status, err
+	}
+
+	json.Unmarshal(data, &resp)
+
+	return resp, status, err
+}
+
+// Directory fields creation
+//
+// Example:
+//
+//	var client = v5.New("https://demo.url", "09jIJ")
+//
+//	data, status, err := client.CustomDictionariesCreate(v5.CustomDictionary{
+//		Name: "Courier profiles",
+//		Code: "courier-profiles",
+//		Elements: []Element{
+//			{
+//				Name: "Name",
+//				Code: "name",
+//			},
+//			{
+//				Name: "Lastname",
+//				Code: "lastname",
+//			}
+//		},
+//	})
+//
+//	if err.ErrorMsg != "" {
+//		fmt.Printf("%v", err.ErrorMsg)
+//	}
+//
+//	if status >= http.StatusBadRequest {
+//		fmt.Printf("%v", err.ErrorMsg)
+//	}
+//
+//	If data.Success == true {
+//		fmt.Printf("%v", data.Code)
+//	}
+func (c *Client) CustomDictionariesCreate(customDictionary CustomDictionary) (CustomResponse, int, ErrorResponse) {
+	var resp CustomResponse
+
+	costJSON, _ := json.Marshal(&customDictionary)
+
+	p := url.Values{
+		"customDictionary": {string(costJSON[:])},
+	}
+
+	data, status, err := c.PostRequest("/custom-fields/dictionaries/create", p)
+
+	if err.ErrorMsg != "" {
+		return resp, status, err
+	}
+
+	json.Unmarshal(data, &resp)
+
+	return resp, status, err
+}
+
+// Getting information on directory
+//
+// Example:
+//
+// 	var client = v5.New("https://demo.url", "09jIJ")
+//
+//	data, status, err := client.CustomDictionary("courier-profiles")
+//
+// 	if err.ErrorMsg != "" {
+// 		fmt.Printf("%v", err.ErrorMsg)
+// 	}
+//
+// 	if status >= http.StatusBadRequest {
+// 		fmt.Printf("%v", err.ErrorMsg)
+// 	}
+//
+// 	If data.Success == true {
+// 		fmt.Printf("%v", data.CustomDictionary.Name)
+// 	}
+func (c *Client) CustomDictionary(code string) (CustomDictionaryResponse, int, ErrorResponse) {
+	var resp CustomDictionaryResponse
+
+	data, status, err := c.GetRequest(fmt.Sprintf("/custom-fields/dictionaries/%s", code))
+
+	if err.ErrorMsg != "" {
+		return resp, status, err
+	}
+
+	json.Unmarshal(data, &resp)
+
+	return resp, status, err
+}
+
+// Directory fields editing
+//
+// Example:
+//
+//	var client = v5.New("https://demo.url", "09jIJ")
+//
+//	data, status, err := client.CustomDictionaryEdit(v5.CustomDictionary{
+//	Name: "Courier profiles",
+//		Code: "courier-profiles",
+//		Elements: []Element{
+//			{
+//				Name: "Name",
+//				Code: "name",
+//			},
+//			{
+//				Name: "Lastname",
+//				Code: "lastname",
+//			}
+//		},
+//	})
+//
+//	if err.ErrorMsg != "" {
+//		fmt.Printf("%v", err.ErrorMsg)
+//	}
+//
+//	if status >= http.StatusBadRequest {
+//		fmt.Printf("%v", err.ErrorMsg)
+//	}
+//
+//	If data.Success == true {
+//		fmt.Printf("%v", data.Code)
+//	}
+func (c *Client) CustomDictionaryEdit(customDictionary CustomDictionary) (CustomResponse, int, ErrorResponse) {
+	var resp CustomResponse
+
+	costJSON, _ := json.Marshal(&customDictionary)
+
+	p := url.Values{
+		"customDictionary": {string(costJSON[:])},
+	}
+
+	data, status, err := c.PostRequest(fmt.Sprintf("/custom-fields/dictionaries/%s/edit", customDictionary.Code), p)
+	if err.ErrorMsg != "" {
+		return resp, status, err
+	}
+
+	json.Unmarshal(data, &resp)
+
+	return resp, status, err
+}
+
+// Custom fields creation
+//
+// Example:
+//
+// 	var client = v5.New("https://demo.url", "09jIJ")
+//
+//	data, status, err := client.CustomFieldsCreate(v5.CustomFieldsEditRequest{
+//		CustomField: v5.CustomFields{
+//			Name:        "First order",
+//			Code:        "first-order",
+//			Type:        "bool",
+//			Entity:      "order",
+//			DisplayArea: "customer",
+//		},
+//	})
+//
+// 	if err.ErrorMsg != "" {
+// 		fmt.Printf("%v", err.ErrorMsg)
+// 	}
+//
+// 	if status >= http.StatusBadRequest {
+// 		fmt.Printf("%v", err.ErrorMsg)
+// 	}
+//
+// 	If data.Success == true {
+// 		fmt.Printf("%v", data.Code)
+// 	}
+func (c *Client) CustomFieldsCreate(customFields CustomFieldsEditRequest) (CustomResponse, int, ErrorResponse) {
+	var resp CustomResponse
+
+	costJSON, _ := json.Marshal(&customFields)
+
+	p := url.Values{
+		"customField": {string(costJSON[:])},
+	}
+
+	data, status, err := c.PostRequest(fmt.Sprintf("/custom-fields/%s/create", customFields.CustomField.Entity), p)
+
+	if err.ErrorMsg != "" {
+		return resp, status, err
+	}
+
+	json.Unmarshal(data, &resp)
+
+	return resp, status, err
+}
+
+// Getting information on custom fields
+//
+// Example:
+//
+// 	var client = v5.New("https://demo.url", "09jIJ")
+//
+//	data, status, err := client.CustomField("order", "first-order")
+//
+// 	if err.ErrorMsg != "" {
+// 		fmt.Printf("%v", err.ErrorMsg)
+// 	}
+//
+// 	if status >= http.StatusBadRequest {
+// 		fmt.Printf("%v", err.ErrorMsg)
+// 	}
+//
+// 	If data.Success == true {
+// 		fmt.Printf("%v", data.CustomField)
+// 	}
+func (c *Client) CustomField(entity, code string) (CustomFieldResponse, int, ErrorResponse) {
+	var resp CustomFieldResponse
+
+	data, status, err := c.GetRequest(fmt.Sprintf("/custom-fields/%s/%s", entity, code))
+
+	if err.ErrorMsg != "" {
+		return resp, status, err
+	}
+
+	json.Unmarshal(data, &resp)
+
+	return resp, status, err
+}
+
+// CustomFieldEdit list method
+//
+// Example:
+//
+// 	var client = v5.New("https://demo.url", "09jIJ")
+//
+//	data, status, err := client.CustomFieldEdit("order", v5.CustomFieldsEditRequest{
+// 		CustomField: v5.CustomFields{
+//			Name: "First customer order",
+//			Code: "first-order",
+//		},
+// })
+//
+// 	if err.ErrorMsg != "" {
+// 		fmt.Printf("%v", err.ErrorMsg)
+// 	}
+//
+// 	if status >= http.StatusBadRequest {
+// 		fmt.Printf("%v", err.ErrorMsg)
+// 	}
+//
+// 	If data.Success == true {
+// 		fmt.Printf("%v", data.Code)
+// 	}
+func (c *Client) CustomFieldEdit(entity string, customFields CustomFieldsEditRequest) (CustomResponse, int, ErrorResponse) {
+	var resp CustomResponse
+
+	costJSON, _ := json.Marshal(&customFields)
+
+	p := url.Values{
+		"customField": {string(costJSON[:])},
+	}
+
+	data, status, err := c.PostRequest(fmt.Sprintf("/custom-fields/%s/%s/edit", entity, customFields.CustomField.Code), p)
+
+	if err.ErrorMsg != "" {
+		return resp, status, err
+	}
+
+	json.Unmarshal(data, &resp)
+
+	return resp, status, err
+}
diff --git a/v5/client_test.go b/v5/client_test.go
index f234ebf..f5fe87e 100644
--- a/v5/client_test.go
+++ b/v5/client_test.go
@@ -14,6 +14,8 @@ import (
 var r *rand.Rand // Rand for this package.
 var user, _ = strconv.Atoi(os.Getenv("RETAILCRM_USER"))
 var statuses = map[int]bool{http.StatusOK: true, http.StatusCreated: true}
+var id int
+var ids []int
 
 func init() {
 	r = rand.New(rand.NewSource(time.Now().UnixNano()))
@@ -1850,3 +1852,391 @@ func TestClient_DeliveryShipments(t *testing.T) {
 		t.Errorf("%v", err.ApiError())
 	}
 }
+
+func TestClient_CostCreate(t *testing.T) {
+	c := client()
+
+	data, status, err := c.CostCreate(CostRecord{
+		DateFrom: "2018-04-02",
+		DateTo:   "2018-04-02",
+		Summ:     124,
+		CostItem: "seo",
+	})
+
+	if err.ErrorMsg != "" {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if status != http.StatusOK {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if data.Success != true {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	id = data.ID
+}
+
+func TestClient_Costs(t *testing.T) {
+	c := client()
+
+	data, status, err := c.Costs(CostsRequest{
+		Filter: CostsFilter{
+			Ids: []string{strconv.Itoa(id)},
+		},
+		Limit: 20,
+		Page:  1,
+	})
+
+	if err.ErrorMsg != "" {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if status != http.StatusOK {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if data.Success != true {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+}
+
+func TestClient_Cost(t *testing.T) {
+	c := client()
+
+	data, status, err := c.Cost(id)
+
+	if err.ErrorMsg != "" {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if status != http.StatusOK {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if data.Success != true {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+}
+
+func TestClient_CostEdit(t *testing.T) {
+	c := client()
+
+	data, status, err := c.CostEdit(id, CostRecord{
+		DateFrom: "2018-04-09",
+		DateTo:   "2018-04-09",
+		Summ:     421,
+		CostItem: "seo",
+		Order:    nil,
+	})
+
+	if err.ErrorMsg != "" {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if status != http.StatusOK {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if data.Success != true {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+}
+
+func TestClient_CostDelete(t *testing.T) {
+	c := client()
+
+	data, status, err := c.CostDelete(id)
+
+	if err.ErrorMsg != "" {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if status != http.StatusOK {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if data.Success != true {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+}
+
+func TestClient_CostsUpload(t *testing.T) {
+	c := client()
+
+	data, status, err := c.CostsUpload([]CostRecord{
+		{
+			Source:   nil,
+			DateFrom: "2018-04-02",
+			DateTo:   "2018-04-02",
+			Summ:     124,
+			CostItem: "seo",
+			Order:    nil,
+		},
+		{
+			Source:   nil,
+			DateFrom: "2018-04-03",
+			DateTo:   "2018-04-03",
+			Summ:     125,
+			CostItem: "seo",
+			Order:    nil,
+			Sites:    []string{"catalog-test"},
+		},
+	})
+
+	if err.ErrorMsg != "" {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if status != http.StatusOK {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if data.Success != true {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	ids = data.UploadedCosts
+}
+
+func TestClient_CostsDelete(t *testing.T) {
+	c := client()
+	data, status, err := c.CostsDelete(ids)
+
+	if err.ErrorMsg != "" {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if status != http.StatusOK {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if data.Success != true {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+}
+
+func TestClient_CustomFields(t *testing.T) {
+	c := client()
+
+	data, status, err := c.CustomFields(CustomFieldsRequest{})
+
+	if err.ErrorMsg != "" {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if status != http.StatusOK {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if data.Success != true {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+}
+func TestClient_CustomDictionaries(t *testing.T) {
+	c := client()
+
+	data, status, err := c.CustomDictionaries(CustomDictionariesRequest{
+		Filter: CustomDictionariesFilter{
+			Name: "test",
+		},
+		Limit: 10,
+		Page:  1,
+	})
+
+	if err.ErrorMsg != "" {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if status != http.StatusOK {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if data.Success != true {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+}
+
+func TestClient_CustomDictionary(t *testing.T) {
+	c := client()
+
+	data, status, err := c.CustomDictionary("test2")
+
+	if err.ErrorMsg != "" {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if status != http.StatusOK {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if data.Success != true {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+}
+
+func TestClient_CustomDictionariesCreate(t *testing.T) {
+	c := client()
+
+	data, status, err := c.CustomDictionariesCreate(CustomDictionary{
+		Name: "test2",
+		Code: "test2",
+		Elements: []Element{
+			{
+				Name: "test",
+				Code: "test",
+			},
+		},
+	})
+
+	if err.ErrorMsg != "" {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if status != http.StatusOK {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if data.Success != true {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+}
+
+func TestClient_CustomDictionaryEdit(t *testing.T) {
+	c := client()
+
+	data, status, err := c.CustomDictionaryEdit(CustomDictionary{
+		Name: "test223",
+		Code: "test2",
+		Elements: []Element{
+			{
+				Name: "test3",
+				Code: "test3",
+			},
+		},
+	})
+
+	if err.ErrorMsg != "" {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if status != http.StatusOK {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if data.Success != true {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+}
+
+func TestClient_CustomFieldsCreate(t *testing.T) {
+	c := client()
+
+	data, status, err := c.CustomFieldsCreate(CustomFieldsEditRequest{
+		CustomField: CustomFields{
+			Name:        "test4",
+			Code:        "test4",
+			Type:        "text",
+			Entity:      "order",
+			DisplayArea: "customer",
+		},
+	})
+
+	if err.ErrorMsg != "" {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if status != http.StatusOK {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if data.Success != true {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+}
+
+func TestClient_CustomField(t *testing.T) {
+	c := client()
+
+	data, status, err := c.CustomField("customer", "testtest")
+
+	if err.ErrorMsg != "" {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if status != http.StatusOK {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if data.Success != true {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+}
+
+func TestClient_CustomFieldEdit(t *testing.T) {
+	c := client()
+
+	data, status, err := c.CustomFieldEdit("customer",  CustomFieldsEditRequest{
+		CustomField: CustomFields{
+			Name: "testtesttest",
+		},
+	})
+
+	if err.ErrorMsg != "" {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if status != http.StatusOK {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+
+	if data.Success != true {
+		t.Errorf("%v", err.ErrorMsg)
+		t.Fail()
+	}
+}
diff --git a/v5/filters.go b/v5/filters.go
index 44ea11b..50f36b9 100644
--- a/v5/filters.go
+++ b/v5/filters.go
@@ -296,3 +296,39 @@ type ShipmentFilter struct {
 	DeliveryTypes []string `url:"deliveryTypes,omitempty,brackets"`
 	Statuses      []string `url:"statuses,omitempty,brackets"`
 }
+
+// CostsFilter type
+type CostsFilter struct {
+	MinSumm          string   `url:"minSumm,omitempty"`
+	MaxSumm          string   `url:"maxSumm,omitempty"`
+	OrderNumber      string   `url:"orderNumber,omitempty"`
+	Comment          string   `url:"orderNumber,omitempty"`
+	Ids              []string `url:"ids,omitempty,brackets"`
+	Sites            []string `url:"sites,omitempty,brackets"`
+	CreatedBy        []string `url:"createdBy,omitempty,brackets"`
+	CostGroups       []string `url:"costGroups,omitempty,brackets"`
+	CostItems        []string `url:"costItems,omitempty,brackets"`
+	Users            []string `url:"users,omitempty,brackets"`
+	DateFrom         string   `url:"dateFrom,omitempty"`
+	DateTo           string   `url:"dateTo,omitempty"`
+	CreatedAtFrom    string   `url:"createdAtFrom,omitempty"`
+	CreatedAtTo      string   `url:"createdAtTo,omitempty"`
+	OrderIds         []string `url:"orderIds,omitempty,brackets"`
+	OrderExternalIds []string `url:"orderIds,omitempty,brackets"`
+}
+
+// CustomFieldsFilter type
+type CustomFieldsFilter struct {
+	Name        string `url:"name,omitempty"`
+	Code        string `url:"code,omitempty"`
+	Type        string `url:"type,omitempty"`
+	Entity      string `url:"entity,omitempty"`
+	ViewMode    string `url:"viewMode,omitempty"`
+	DisplayArea string `url:"displayArea,omitempty"`
+}
+
+// CustomDictionariesFilter type
+type CustomDictionariesFilter struct {
+	Name string `url:"name,omitempty"`
+	Code string `url:"code,omitempty"`
+}
diff --git a/v5/request.go b/v5/request.go
index 95145ee..9c024a1 100644
--- a/v5/request.go
+++ b/v5/request.go
@@ -142,3 +142,30 @@ type DeliveryShipmentsRequest struct {
 	Limit  int            `url:"limit,omitempty"`
 	Page   int            `url:"page,omitempty"`
 }
+
+// CostsRequest type
+type CostsRequest struct {
+	Filter CostsFilter `url:"filter,omitempty"`
+	Limit  int         `url:"limit,omitempty"`
+	Page   int         `url:"page,omitempty"`
+}
+
+// CustomFieldsRequest type
+type CustomFieldsRequest struct {
+	Filter CustomFieldsFilter `url:"filter,omitempty"`
+	Limit  int                `url:"limit,omitempty"`
+	Page   int                `url:"page,omitempty"`
+}
+
+// CustomeDictionariesRequest type
+type CustomDictionariesRequest struct {
+	Filter CustomDictionariesFilter `url:"filter,omitempty"`
+	Limit  int                      `url:"limit,omitempty"`
+	Page   int                      `url:"page,omitempty"`
+}
+
+// CustomFieldsEditRequest type
+type CustomFieldsEditRequest struct {
+	CustomField CustomFields `url:"customField,omitempty"`
+	Entity       string       `url:"entity,omitempty"`
+}
diff --git a/v5/response.go b/v5/response.go
index 84d4fd0..d9cf2b2 100644
--- a/v5/response.go
+++ b/v5/response.go
@@ -328,3 +328,61 @@ type IntegrationModuleEditResponse struct {
 	Success bool              `json:"success"`
 	Info    map[string]string `json:"info,omitempty,brackets"`
 }
+
+// CostsResponse type
+type CostsResponse struct {
+	Success    bool        `json:"success"`
+	Pagination *Pagination `json:"pagination,omitempty"`
+	Costs      []Cost      `json:"costs,omitempty,brackets"`
+}
+
+// CostsUploadResponse type
+type CostsUploadResponse struct {
+	Success bool  `json:"success"`
+	UploadedCosts     []int `json:"uploadedCosts,omitempty,brackets"`
+}
+
+// CostsDeleteResponse type
+type CostsDeleteResponse struct {
+	Success bool  `json:"success"`
+	Count int `json:"count,omitempty,brackets"`
+	NotRemovedIds     []int `json:"notRemovedIds,omitempty,brackets"`
+}
+
+// CostResponse type
+type CostResponse struct {
+	Success bool  `json:"success"`
+	Cost    *Cost `json:"cost,omitempty,brackets"`
+}
+
+// CustomFieldsResponse type
+type CustomFieldsResponse struct {
+	Success      bool           `json:"success"`
+	Pagination   *Pagination    `json:"pagination,omitempty"`
+	CustomFields []CustomFields `json:"customFields,omitempty,brackets"`
+}
+
+// CustomDictionariesResponse type
+type CustomDictionariesResponse struct {
+	Success            bool                `json:"success"`
+	Pagination         *Pagination         `json:"pagination,omitempty"`
+	CustomDictionaries *[]CustomDictionary `json:"customDictionaries,omitempty,brackets"`
+}
+
+// CustomDictionariesResponse type
+type CustomResponse struct {
+	Success bool   `json:"success"`
+	Code    string `json:"code,omitempty"`
+}
+
+// CustomDictionaryResponse type
+type CustomDictionaryResponse struct {
+	Success          bool              `json:"success"`
+	CustomDictionary *CustomDictionary `json:"CustomDictionary,omitempty,brackets"`
+}
+
+// CustomFieldResponse type
+type CustomFieldResponse struct {
+	Success     bool         `json:"success"`
+	CustomField CustomFields `json:"customField,omitempty,brackets"`
+}
diff --git a/v5/types.go b/v5/types.go
index 8cec992..76d20b2 100644
--- a/v5/types.go
+++ b/v5/types.go
@@ -864,3 +864,71 @@ type Action struct {
 	URL        string   `json:"url,omitempty"`
 	CallPoints []string `json:"callPoints,omitempty"`
 }
+
+/**
+Cost related types
+*/
+
+// CostRecord type
+type CostRecord struct {
+	Source   *Source  `json:"source,omitempty"`
+	Comment  string   `json:"comment,omitempty"`
+	DateFrom string   `json:"dateFrom,omitempty"`
+	DateTo   string   `json:"dateTo,omitempty"`
+	Summ     float32  `json:"summ,omitempty"`
+	CostItem string   `json:"costItem,omitempty"`
+	UserId   int      `json:"userId,omitempty"`
+	Order    *Order   `json:"order,omitempty"`
+	Sites    []string `json:"sites,omitempty,brackets"`
+}
+
+// Cost type
+type Cost struct {
+	Source    *Source  `json:"source,omitempty"`
+	ID        int      `json:"id,omitempty"`
+	DateFrom  string   `json:"dateFrom,omitempty"`
+	DateTo    string   `json:"dateTo,omitempty"`
+	Summ      float32  `json:"summ,omitempty"`
+	CostItem  string   `json:"costItem,omitempty"`
+	Comment   string   `json:"comment,omitempty"`
+	CreatedAt string   `json:"createdAt,omitempty"`
+	CreatedBy string   `json:"createdBy,omitempty"`
+	Order     *Order   `json:"order,omitempty"`
+	UserId    int      `json:"userId,omitempty"`
+	Sites     []string `json:"sites,omitempty,brackets"`
+}
+
+// CustomFields type
+type CustomFields struct {
+	Name           string `json:"name,omitempty"`
+	Code           string `json:"code,omitempty"`
+	Required       bool   `json:"required,omitempty"`
+	InFilter       bool   `json:"inFilter,omitempty"`
+	InList         bool   `json:"inList,omitempty"`
+	InGroupActions bool   `json:"inGroupActions,omitempty"`
+	Type           string `json:"type,omitempty"`
+	Entity         string `json:"entity,omitempty"`
+	Default        string `json:"default,omitempty"`
+	Ordering       int    `json:"ordering,omitempty"`
+	DisplayArea    string `json:"displayArea,omitempty"`
+	ViewMode       string `json:"viewMode,omitempty"`
+	Dictionary     string `json:"dictionary,omitempty"`
+}
+
+/**
+CustomeDictionaries related types
+*/
+
+// customDictionary type
+type CustomDictionary struct {
+	Name     string    `json:"name,omitempty"`
+	Code     string    `json:"code,omitempty"`
+	Elements []Element `json:"elements,omitempty,brackets"`
+}
+
+// Dictionary Element type
+type Element struct {
+	Name     string `json:"name,omitempty"`
+	Code     string `json:"code,omitempty"`
+	Ordering int    `json:"ordering,omitempty"`
+}