diff --git a/ui-ngx/src/app/modules/home/components/profile/device/lwm2m/lwm2m-device-config-server.component.html b/ui-ngx/src/app/modules/home/components/profile/device/lwm2m/lwm2m-device-config-server.component.html
index fc1f6adf47..f1cafd7e81 100644
--- a/ui-ngx/src/app/modules/home/components/profile/device/lwm2m/lwm2m-device-config-server.component.html
+++ b/ui-ngx/src/app/modules/home/components/profile/device/lwm2m/lwm2m-device-config-server.component.html
@@ -58,8 +58,7 @@
           <mat-label>{{ 'device-profile.lwm2m.short-id' | translate }}</mat-label>
           <mat-icon *ngIf="!disabled" class="mat-primary" aria-hidden="false" aria-label="help-icon" matSuffix style="cursor:pointer;"
                     matTooltip="{{ (isBootstrap ? 'device-profile.lwm2m.short-id-tooltip-bootstrap': 'device-profile.lwm2m.short-id-tooltip') | translate }}">help</mat-icon>
-          <input *ngIf="!isBootstrap" matInput type="number" [min]="shortServerIdMin" [max]="shortServerIdMax" formControlName="shortServerId" required>
-          <input *ngIf="isBootstrap" matInput type="number" formControlName="shortServerId" required>
+          <input matInput type="number" formControlName="shortServerId" required>
           <mat-error *ngIf="serverFormGroup.get('shortServerId').hasError('required')">
             {{ 'device-profile.lwm2m.short-id-required' | translate }}
           </mat-error>
diff --git a/ui-ngx/src/app/modules/home/components/profile/device/lwm2m/lwm2m-device-config-server.component.ts b/ui-ngx/src/app/modules/home/components/profile/device/lwm2m/lwm2m-device-config-server.component.ts
index b2c5a2fc07..7d0ce0f887 100644
--- a/ui-ngx/src/app/modules/home/components/profile/device/lwm2m/lwm2m-device-config-server.component.ts
+++ b/ui-ngx/src/app/modules/home/components/profile/device/lwm2m/lwm2m-device-config-server.component.ts
@@ -98,11 +98,16 @@ export class Lwm2mDeviceConfigServerComponent implements OnInit, ControlValueAcc
   ngOnInit(): void {
     this.serverFormGroup = this.fb.group({
       host: ['', Validators.required],
-      port: ['', [Validators.required, Validators.min(1), Validators.max(65535), Validators.pattern('[0-9]*')]],
+      port: ['', [Validators.required, Validators.min(5683), Validators.max(5688), Validators.pattern('[0-9]*')]],
       securityMode: [Lwm2mSecurityType.NO_SEC],
       serverPublicKey: [''],
       clientHoldOffTime: ['', [Validators.required, Validators.min(0), Validators.pattern('[0-9]*')]],
-      shortServerId: ['', [Validators.required, Validators.pattern(this.isBootstrap ? '^(0|65535)$' : '[0-9]*')]],
+      // shortServerId: ['', [Validators.required, Validators.pattern(this.isBootstrap ? '^(' + this.shortServerIdBsMin+ '|' + this.shortServerIdBsMax + ')$' : '[0-9]*'), !this.isBootstrap ? [Validators.min(this.shortServerIdMin), Validators.max(this.shortServerIdMax)] : [] ]],
+      shortServerId: ['', [Validators.required, Validators.pattern(this.isBootstrap ? '^(' + this.shortServerIdBsMin+ '|' + this.shortServerIdBsMax + ')$' : '[0-9]*'),
+        ...(!this.isBootstrap ? [
+          Validators.min(this.shortServerIdMin),
+          Validators.max(this.shortServerIdMax)
+        ] : []) ]],
       bootstrapServerAccountTimeout: ['', [Validators.required, Validators.min(0), Validators.pattern('[0-9]*')]],
       binding: [''],
       lifetime: [null, [Validators.required, Validators.min(0), Validators.pattern('[0-9]*')]],