diff --git a/database/contract/contract.go b/database/contract/contract.go
index 3d7f1e7..6f5c56c 100644
--- a/database/contract/contract.go
+++ b/database/contract/contract.go
@@ -120,8 +120,9 @@ func UpdateContract(contract models.Contract) (models.Contract, int, error) {
 	var devices []models.Device
 	var status int
 	var err error
-	if contract.DeviceIDs != nil {
-		devices, status, err = device.GetDevicesByID(contract.DeviceIDs)
+	if contract.DevicesImeis != nil {
+		log.Printf("Found devices imes %v", contract.DevicesImeis)
+		devices, status, err = device.GetDevicesByImei(contract.DevicesImeis)
 		if err != nil {
 			return contract, status, err
 		}
diff --git a/database/device/device.go b/database/device/device.go
index adf0c8f..a6658be 100644
--- a/database/device/device.go
+++ b/database/device/device.go
@@ -59,6 +59,35 @@ func GetDevicesByID(deviceIDs []int64) ([]models.Device, int, error) {
 	return devices, http.StatusOK, nil
 }
 
+func GetDevicesByImei(imeiIDs []string) ([]models.Device, int, error) {
+	// Create a slice to hold the devices
+	var devices []models.Device
+
+	// Quote each IMEI ID
+	for i, imei := range imeiIDs {
+		imeiIDs[i] = "'" + imei + "'"
+	}
+
+	// Join the quoted IMEI IDs into a comma-separated string
+	idStr := strings.Join(imeiIDs, ",")
+
+	// Construct the SQL query manually
+	sqlQuery := fmt.Sprintf("SELECT * FROM devices WHERE imei IN (%s)", idStr)
+
+	// Fetch devices from the database based on DeviceIDs in the contract
+	// Execute the query
+	if err := shared.GetDb().Raw(sqlQuery).Scan(&devices).Error; err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			log.Printf("GetDevicesByContract Error: No devices found: %v", err)
+			return devices, http.StatusNotFound, err
+		} else {
+			log.Printf("GetDevicesByContract Error: Database error: %v", err)
+			return devices, http.StatusInternalServerError, err
+		}
+	}
+	return devices, http.StatusOK, nil
+}
+
 func GetDeviceInfoForContract(deviceID uint64, contract models.Contract) (models.GeoJSONFeatureCollection, int, error) {
 
 	var deviceInfos []models.DeviceInfo
diff --git a/models/contract.go b/models/contract.go
index 7055cfa..210d2ca 100644
--- a/models/contract.go
+++ b/models/contract.go
@@ -36,6 +36,7 @@ type Contract struct {
 	SellerName       string         `json:"sellerName" gorm:"-"`
 	ProductName      string         `json:"productName" gorm:"-"`
 	NumberOfDevices  int            `json:"numberOfDevices" gorm:"-"`
+	DevicesImeis     []string       `json:"devicesImeis" gorm:"-"`
 }
 
 type DashboardContractResponse struct {
@@ -266,8 +267,8 @@ type Status struct {
 }
 
 type ActiveContractsResponse struct {
-	ActiveCount int64	`json:"active"`
-	ExecutedCount int64	    `json:"executed"`
+	ActiveCount      int64                       `json:"active"`
+	ExecutedCount    int64                       `json:"executed"`
 	MonthlyContracts map[string]map[string]int64 `json:"monthly"`
 }
 
diff --git a/postman/Backend.postman_collection.json b/postman/Backend.postman_collection.json
index 3ac8494..18f9c52 100644
--- a/postman/Backend.postman_collection.json
+++ b/postman/Backend.postman_collection.json
@@ -1,10 +1,8 @@
 {
 	"info": {
-		"_postman_id": "cae9b5db-2e4f-46c8-9f86-51c530d51c36",
+		"_postman_id": "001ed695-e2e5-49c0-8fab-39516921370b",
 		"name": "Backend",
-		"schema": "https://schema.getpostman.com/json/collection/v2.0.0/collection.json",
-		"_exporter_id": "29923405",
-		"_collection_link": "https://pactual-toptal.postman.co/workspace/pactual-toptal-Workspace~afe12f79-75cd-428c-8cbd-e47c5f2cad3c/collection/29923405-cae9b5db-2e4f-46c8-9f86-51c530d51c36?action=share&source=collection_link&creator=29923405"
+		"schema": "https://schema.getpostman.com/json/collection/v2.1.0/collection.json"
 	},
 	"item": [
 		{
@@ -24,7 +22,16 @@
 								}
 							}
 						},
-						"url": "{{URL}}/contracts/create"
+						"url": {
+							"raw": "{{URL}}/contracts/create",
+							"host": [
+								"{{URL}}"
+							],
+							"path": [
+								"contracts",
+								"create"
+							]
+						}
 					},
 					"response": [
 						{
@@ -41,7 +48,16 @@
 										}
 									}
 								},
-								"url": "{{URL}}/contracts/create"
+								"url": {
+									"raw": "{{URL}}/contracts/create",
+									"host": [
+										"{{URL}}"
+									],
+									"path": [
+										"contracts",
+										"create"
+									]
+								}
 							},
 							"status": "OK",
 							"code": 200,
@@ -88,14 +104,23 @@
 						"header": [],
 						"body": {
 							"mode": "raw",
-							"raw": "{\n  \"deviceIds\": [1,2],\n  \"status\": \"active\"\n}",
+							"raw": "{\n  \"devicesImeis\": [\"352656107000002\",\"352656107000001\"],\n  \"status\": \"active\"\n}",
 							"options": {
 								"raw": {
 									"language": "json"
 								}
 							}
 						},
-						"url": "{{URL}}/contracts/2"
+						"url": {
+							"raw": "{{URL}}/contracts/1",
+							"host": [
+								"{{URL}}"
+							],
+							"path": [
+								"contracts",
+								"1"
+							]
+						}
 					},
 					"response": [
 						{
@@ -112,7 +137,16 @@
 										}
 									}
 								},
-								"url": "{{URL}}/contracts/create"
+								"url": {
+									"raw": "{{URL}}/contracts/create",
+									"host": [
+										"{{URL}}"
+									],
+									"path": [
+										"contracts",
+										"create"
+									]
+								}
 							},
 							"status": "OK",
 							"code": 200,
@@ -157,7 +191,15 @@
 					"request": {
 						"method": "GET",
 						"header": [],
-						"url": "{{URL}}/contracts"
+						"url": {
+							"raw": "{{URL}}/contracts",
+							"host": [
+								"{{URL}}"
+							],
+							"path": [
+								"contracts"
+							]
+						}
 					},
 					"response": [
 						{
@@ -165,7 +207,15 @@
 							"originalRequest": {
 								"method": "GET",
 								"header": [],
-								"url": "{{URL}}/contracts"
+								"url": {
+									"raw": "{{URL}}/contracts",
+									"host": [
+										"{{URL}}"
+									],
+									"path": [
+										"contracts"
+									]
+								}
 							},
 							"status": "OK",
 							"code": 200,
@@ -210,7 +260,16 @@
 					"request": {
 						"method": "GET",
 						"header": [],
-						"url": "{{URL}}/contracts/1"
+						"url": {
+							"raw": "{{URL}}/contracts/1",
+							"host": [
+								"{{URL}}"
+							],
+							"path": [
+								"contracts",
+								"1"
+							]
+						}
 					},
 					"response": [
 						{
@@ -218,7 +277,15 @@
 							"originalRequest": {
 								"method": "GET",
 								"header": [],
-								"url": "{{URL}}/contracts"
+								"url": {
+									"raw": "{{URL}}/contracts",
+									"host": [
+										"{{URL}}"
+									],
+									"path": [
+										"contracts"
+									]
+								}
 							},
 							"status": "OK",
 							"code": 200,
@@ -263,7 +330,16 @@
 					"request": {
 						"method": "GET",
 						"header": [],
-						"url": "{{URL}}/contracts/statuses"
+						"url": {
+							"raw": "{{URL}}/contracts/statuses",
+							"host": [
+								"{{URL}}"
+							],
+							"path": [
+								"contracts",
+								"statuses"
+							]
+						}
 					},
 					"response": [
 						{
@@ -271,7 +347,16 @@
 							"originalRequest": {
 								"method": "GET",
 								"header": [],
-								"url": "{{URL}}/contracts/statuses"
+								"url": {
+									"raw": "{{URL}}/contracts/statuses",
+									"host": [
+										"{{URL}}"
+									],
+									"path": [
+										"contracts",
+										"statuses"
+									]
+								}
 							},
 							"status": "OK",
 							"code": 200,
@@ -508,7 +593,16 @@
 					"request": {
 						"method": "GET",
 						"header": [],
-						"url": "{{URL}}/product_templates/1"
+						"url": {
+							"raw": "{{URL}}/product_templates/1",
+							"host": [
+								"{{URL}}"
+							],
+							"path": [
+								"product_templates",
+								"1"
+							]
+						}
 					},
 					"response": [
 						{