diff --git a/libs/auth/src/common/services/auth-request/auth-request-api.service.ts b/libs/auth/src/common/services/auth-request/auth-request-api.service.ts
index b5fc72588a6..c9fec1400c9 100644
--- a/libs/auth/src/common/services/auth-request/auth-request-api.service.ts
+++ b/libs/auth/src/common/services/auth-request/auth-request-api.service.ts
@@ -54,7 +54,20 @@ export class DefaultAuthRequestApiService implements AuthRequestApiService {
 
   async postAuthRequest(request: AuthRequest): Promise<AuthRequestResponse> {
     try {
-      const response = await this.apiService.send("POST", "/auth-requests/", request, false, true);
+      // Submit the current device identifier in the header as well as in the POST body.
+      // The value in the header will be used to build the request context and ensure that the resulting
+      // notifications have the current device as a source.
+      const response = await this.apiService.send(
+        "POST",
+        "/auth-requests/",
+        request,
+        false,
+        true,
+        null,
+        (headers) => {
+          headers.set("Device-Identifier", request.deviceIdentifier);
+        },
+      );
 
       return new AuthRequestResponse(response);
     } catch (e: unknown) {
diff --git a/libs/common/src/abstractions/api.service.ts b/libs/common/src/abstractions/api.service.ts
index 5bd2221860b..fe3f356719b 100644
--- a/libs/common/src/abstractions/api.service.ts
+++ b/libs/common/src/abstractions/api.service.ts
@@ -142,7 +142,7 @@ export abstract class ApiService {
     body: any,
     authed: boolean,
     hasResponse: boolean,
-    apiUrl?: string,
+    apiUrl?: string | null,
     alterHeaders?: (headers: Headers) => void,
   ) => Promise<any>;
 
diff --git a/libs/common/src/services/api.service.ts b/libs/common/src/services/api.service.ts
index ad59ad0837a..6d90f2ac253 100644
--- a/libs/common/src/services/api.service.ts
+++ b/libs/common/src/services/api.service.ts
@@ -1863,7 +1863,7 @@ export class ApiService implements ApiServiceAbstraction {
     body: any,
     authed: boolean,
     hasResponse: boolean,
-    apiUrl?: string,
+    apiUrl?: string | null,
     alterHeaders?: (headers: Headers) => void,
   ): Promise<any> {
     const env = await firstValueFrom(this.environmentService.environment$);