Optimize multiple dis-enrollment

components/device-mgt/io.entgra.device.mgt.core.device.mgt.api/src/main/java/io/entgra/device/mgt/core/device/mgt/api/jaxrs/service/api/DeviceManagementService.java

@@ -1287,7 +1287,8 @@ public interface DeviceManagementService {
             produces = MediaType.APPLICATION_JSON,
             httpMethod = "PUT",
             value = "Remove Multiple Devices Specified by Device IDs and Device Type",
-            notes = "Deletes multiple devices of the specified device type specified by their device IDs and returns the status of the deletion operation.",
+            notes = "Deletes multiple devices of the specified device type specified by their device IDs" +
+                    " and returns the status of the dis-enrollment operation.",
             tags = "Device Management",
             extensions = {
                     @Extension(properties = {
@@ -1319,7 +1320,7 @@ public interface DeviceManagementService {
             })
     Response disenrollMultipleDevices(@ApiParam(
             name = "deviceTypeWithDeviceIds",
-            value = "The properties to advanced search devices.",
+            value = "Device type and corresponding device IDs for disenrollment",
             required = true)
                                       DisenrollRequest deviceTypeWithDeviceIds);
     @GET

components/device-mgt/io.entgra.device.mgt.core.device.mgt.api/src/main/java/io/entgra/device/mgt/core/device/mgt/api/jaxrs/service/impl/DeviceManagementServiceImpl.java

@@ -491,17 +491,22 @@ public class DeviceManagementServiceImpl implements DeviceManagementService {
         List<DeviceIdentifier> failedToDisenrollDevices = new ArrayList<>();
 
         Map<String, List<String>> list = deviceTypeWithDeviceIds.getDeviceTypeWithDeviceIds();
+        String deviceType;
+        List<String> deviceIds;
+        DeviceIdentifier deviceIdentifier;
+        Device persistedDevice;
+        boolean response;
 
         for (Map.Entry<String, List<String>> entry : list.entrySet()) {
-            String deviceType = entry.getKey();
+            deviceType = entry.getKey();
-            List<String> deviceIds = entry.getValue();
+            deviceIds = entry.getValue();
 
             for (String deviceId : deviceIds) {
-                DeviceIdentifier deviceIdentifier = new DeviceIdentifier(deviceId, deviceType);
+                deviceIdentifier = new DeviceIdentifier(deviceId, deviceType);
                 try {
-                    Device persistedDevice = deviceManagementProviderService.getDevice(deviceIdentifier, true);
+                    persistedDevice = deviceManagementProviderService.getDevice(deviceIdentifier, true);
                     if (persistedDevice != null) {
-                        boolean response = deviceManagementProviderService.disenrollDevice(deviceIdentifier);
+                        response = deviceManagementProviderService.disenrollDevice(deviceIdentifier);
                         if (response) {
                             successfullyDisenrolledDevices.add(deviceIdentifier);
                         } else {
@@ -509,6 +514,10 @@ public class DeviceManagementServiceImpl implements DeviceManagementService {
                         }
                     } else {
                         failedToDisenrollDevices.add(deviceIdentifier);
+                        if(log.isDebugEnabled()){
+                            String msg = "Error encountered while dis-enrolling device of type: " + deviceType + " with " + deviceId;
+                            log.error(msg);
+                        }
                     }
                 } catch (DeviceManagementException e) {
                     String msg = "Error encountered while dis-enrolling device of type: " + deviceType + " with " + deviceId;