From 8990477f91b8d848333a701944823b424595d41d Mon Sep 17 00:00:00 2001
From: Andrii Shvaika <ashvayka@thingsboard.io>
Date: Thu, 2 Apr 2026 08:59:40 +0300
Subject: [PATCH] fix(iot-hub): add type discriminator to device register
 request body

Jackson requires the 'type' field for @JsonTypeInfo polymorphic
deserialization of DeviceInstalledItemDescriptor.
---
 ui-ngx/src/app/core/http/iot-hub-api.service.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ui-ngx/src/app/core/http/iot-hub-api.service.ts b/ui-ngx/src/app/core/http/iot-hub-api.service.ts
index ef1fce640e..c6ecd701cd 100644
--- a/ui-ngx/src/app/core/http/iot-hub-api.service.ts
+++ b/ui-ngx/src/app/core/http/iot-hub-api.service.ts
@@ -114,12 +114,12 @@ export class IotHubApiService {
 
   public registerDeviceInstall(
     versionId: string,
-    descriptor: { createdEntityIds: { entityType: string; id: string }[]; dashboardId?: { id: string } },
+    descriptor: { type?: string; createdEntityIds: { entityType: string; id: string }[]; dashboardId?: { id: string } },
     config?: IotHubRequestConfig
   ): Observable<InstallItemVersionResult> {
     return this.http.post<InstallItemVersionResult>(
       `/api/iot-hub/device/register?versionId=${versionId}`,
-      descriptor,
+      { type: 'DEVICE', ...descriptor },
       { params: this.buildParams(config) }
     );
   }