diff --git a/ui-ngx/src/app/modules/home/components/profile/alarm/device-profile-alarm.component.html b/ui-ngx/src/app/modules/home/components/profile/alarm/device-profile-alarm.component.html
index a332cda0bf..ab151f6d93 100644
--- a/ui-ngx/src/app/modules/home/components/profile/alarm/device-profile-alarm.component.html
+++ b/ui-ngx/src/app/modules/home/components/profile/alarm/device-profile-alarm.component.html
@@ -45,6 +45,9 @@
         <mat-error *ngIf="alarmFormGroup.get('alarmType').hasError('unique')">
           {{ 'device-profile.alarm-type-unique' | translate }}
         </mat-error>
+        <mat-error *ngIf="alarmFormGroup.get('alarmType').hasError('maxlength')">
+          {{ 'device-profile.alarm-type-max-length' | translate }}
+        </mat-error>
       </mat-form-field>
     </div>
     <mat-expansion-panel class="advanced-settings" [expanded]="false">
diff --git a/ui-ngx/src/app/modules/home/components/profile/alarm/device-profile-alarm.component.ts b/ui-ngx/src/app/modules/home/components/profile/alarm/device-profile-alarm.component.ts
index a77641505b..20ea89e53c 100644
--- a/ui-ngx/src/app/modules/home/components/profile/alarm/device-profile-alarm.component.ts
+++ b/ui-ngx/src/app/modules/home/components/profile/alarm/device-profile-alarm.component.ts
@@ -93,7 +93,7 @@ export class DeviceProfileAlarmComponent implements ControlValueAccessor, OnInit
   ngOnInit() {
     this.alarmFormGroup = this.fb.group({
       id: [null, Validators.required],
-      alarmType: [null, Validators.required],
+      alarmType: [null, [Validators.required, Validators.maxLength(255)]],
       createRules: [null],
       clearRule: [null],
       propagate: [null],
diff --git a/ui-ngx/src/app/modules/home/pages/rulechain/rule-node-details.component.html b/ui-ngx/src/app/modules/home/pages/rulechain/rule-node-details.component.html
index 97d03a8d73..451b8ad8ee 100644
--- a/ui-ngx/src/app/modules/home/pages/rulechain/rule-node-details.component.html
+++ b/ui-ngx/src/app/modules/home/pages/rulechain/rule-node-details.component.html
@@ -32,6 +32,9 @@
                          || ruleNodeFormGroup.get('name').hasError('pattern')">
             {{ 'rulenode.name-required' | translate }}
           </mat-error>
+          <mat-error *ngIf="ruleNodeFormGroup.get('name').hasError('maxlength')">
+            {{ 'rulenode.name-max-length' | translate }}
+          </mat-error>
         </mat-form-field>
         <mat-checkbox formControlName="debugMode">
           {{ 'rulenode.debug-mode' | translate }}
diff --git a/ui-ngx/src/app/modules/home/pages/rulechain/rule-node-details.component.ts b/ui-ngx/src/app/modules/home/pages/rulechain/rule-node-details.component.ts
index d5a3fcc8a0..4627b2a06b 100644
--- a/ui-ngx/src/app/modules/home/pages/rulechain/rule-node-details.component.ts
+++ b/ui-ngx/src/app/modules/home/pages/rulechain/rule-node-details.component.ts
@@ -78,7 +78,7 @@ export class RuleNodeDetailsComponent extends PageComponent implements OnInit, O
       if (this.ruleNode.component.type !== RuleNodeType.RULE_CHAIN) {
 
         this.ruleNodeFormGroup = this.fb.group({
-          name: [this.ruleNode.name, [Validators.required, Validators.pattern('(.|\\s)*\\S(.|\\s)*')]],
+          name: [this.ruleNode.name, [Validators.required, Validators.pattern('(.|\\s)*\\S(.|\\s)*'), Validators.maxLength(255)]],
           debugMode: [this.ruleNode.debugMode, []],
           configuration: [this.ruleNode.configuration, [Validators.required]],
           additionalInfo: this.fb.group(
diff --git a/ui-ngx/src/assets/locale/locale.constant-en_US.json b/ui-ngx/src/assets/locale/locale.constant-en_US.json
index 8b7ff34a54..bd14f73e27 100644
--- a/ui-ngx/src/assets/locale/locale.constant-en_US.json
+++ b/ui-ngx/src/assets/locale/locale.constant-en_US.json
@@ -1169,6 +1169,7 @@
         "alarm-type": "Alarm type",
         "alarm-type-required": "Alarm type is required.",
         "alarm-type-unique": "Alarm type must be unique within the device profile alarm rules.",
+        "alarm-type-max-length": "Alarm type should be less than 256",
         "create-alarm-pattern": "Create <b>{{alarmType}}</b> alarm",
         "create-alarm-rules": "Create alarm rules",
         "no-create-alarm-rules": "No create conditions configured",
@@ -2578,6 +2579,7 @@
         "add": "Add rule node",
         "name": "Name",
         "name-required": "Name is required.",
+        "name-max-length": "Name should be less than 256",
         "type": "Type",
         "description": "Description",
         "delete": "Delete rule node",