Create ui-c8y-1020-40-0-avoid-unnecessary-unavailability-alarms-for-l…

…w-m-2-m-device-graft.md (#2550)

content/change-logs/device-management/ui-c8y-1020-40-0-avoid-unnecessary-unavailability-alarms-for-lw-m-2-m-device-graft.md

@@ -0,0 +1,17 @@
+---
+date: ""
+title: Added new option to avoid unnecessary unavailability alarms for LWM2M devices
+product_area: Device management & connectivity
+change_type:
+  - value: change-QHu1GdukP
+    label: Feature
+component:
+  - value: component--KIsStyzM
+    label: Device Management app
+build_artifact:
+  - value: tc-pjJiURv9Y
+    label: ui-c8y
+ticket: DM-3770
+version: 1020.40.0
+---
+A new **Automatic setting of required interval** option has been added to the configuration of LWM2M devices. This setting is configurable so that unavailability alarms will only be triggered when an LWM2M device is truly unavailable, reducing the number of false alarms. For more details see [LWM2M configuration](protocol-integration/lwm2m/#lwm2m-configuration).

content/protocol-integration/lwm2m-bundle/device-details.md

@@ -68,6 +68,8 @@ The **LWM2M configuration** tab displays all LWM2M settings related to the devic
   * Timestamp resources
   * Objects tab behavior (keep old values)
   * Disable the default behavior for object instances of objects 3 (device), 4 (connectivity monitoring) and 6 (location)
+  * Automatic setting of required interval 
+    * When enabled, the LWM2M service automatically sets the interval to registration lifetime plus 2 minutes. If disabled, the user can define a required interval for the device on the **Info** tab in the device details. If set to default, the default behavior of the LWM2M service will be used.</p>
 * **Bootstrap settings** - related to LWM2M bootstrap
   * Bootstrap server ID
   * Security instance offset

content/protocol-integration/lwm2m-bundle/registering-lwm2m-devices.md

@@ -383,7 +383,7 @@ The value must not exceed the maximum request timeout limit given in the LWM2M m
 <td style="text-align: left">Automatic setting of required interval</td>
 <td style="text-align: left">autoManageAvailabilityRequiredInterval</td>
 <td style="text-align: left">Boolean</td>
-<td style="text-align: left">When true (default), the LWM2M agent automatically sets the interval to registration lifetime plus 2 minutes.</td>
+<td style="text-align: left">This setting is configurable so that unavailability alarms will only be triggered when an LWM2M device is truly unavailable, reducing the number of false alarms. When true (default), the LWM2M service automatically sets the interval to registration lifetime plus 2 minutes. When false, the user can define a required interval using Availability required interval value "availabilityRequiredInterval" property during device registration or on the "Info" tab in the device details after device creation. If value is not provided ("null"), the default behavior of the LWM2M service will be used.</td>
 <td style="text-align: left">Optional, default = true</td>
 </tr>
 <tr>