diff --git a/components/dialog-add-channel.tsx b/components/dialog-add-channel.tsx
index 6ed1c7f..cbc5594 100644
--- a/components/dialog-add-channel.tsx
+++ b/components/dialog-add-channel.tsx
@@ -66,14 +66,34 @@ export function AddChannelDialog({
     try {
       setLoading(true);
 
-      // Step 1: Verify/add channel via channels API
-      await channelsApi.list({ username });
+      const username = parseChannelInput(inputValue);
 
-      // Step 2: Create empty placement
+      if (!username) {
+        setError("Не удалось распознать username из ссылки");
+        return;
+      }
+
+      if (existingUsernames.has(username.toLowerCase())) {
+        setError("Этот канал уже добавлен в проект");
+        return;
+      }
+
+      // Step 1: Find channel by username to get channel_id
+      const channelsResponse = await channelsApi.list({ username });
+      const channel = channelsResponse.items.find(
+        (c) => c.username?.toLowerCase() === username.toLowerCase()
+      );
+
+      if (!channel) {
+        setError("Канал не найден в каталоге");
+        return;
+      }
+
+      // Step 2: Create empty placement with channel_id
       await placementsApi.createBulk(workspaceId, projectId, {
         channels: [
           {
-            username,
+            channel_id: channel.id,
             status: "Без статуса",
           },
         ],
diff --git a/components/dialog-create-placements.tsx b/components/dialog-create-placements.tsx
index 4b284ae..28dfb1b 100644
--- a/components/dialog-create-placements.tsx
+++ b/components/dialog-create-placements.tsx
@@ -24,12 +24,12 @@ import {
 } from "@/components/ui/select";
 import { cn } from "@/lib/utils";
 import { parseChannelInput } from "@/lib/utils/channel-parser";
-import { placementsApi, creativesApi } from "@/lib/api";
-import type { Placement, Creative } from "@/lib/types/api";
+import { placementsApi, creativesApi, channelsApi } from "@/lib/api";
+import type { Placement, Creative, Channel } from "@/lib/types/api";
 
 interface ChannelInput {
   username: string;
-  isNew: boolean;
+  channelId: string;
 }
 
 interface CreatePlacementsDialogProps {
@@ -108,7 +108,7 @@ export function CreatePlacementsDialog({
     }
   };
 
-  const addChannel = () => {
+  const addChannel = async () => {
     const username = parseChannelInput(newChannelInput);
     if (!username) {
       setError("Не удалось распознать username");
@@ -125,9 +125,25 @@ export function CreatePlacementsDialog({
       return;
     }
 
-    setSelectedChannels([...selectedChannels, { username, isNew: true }]);
-    setNewChannelInput("");
-    setError(null);
+    // Look up channel by username to get channel_id
+    try {
+      const channelsResponse = await channelsApi.list({ username });
+      const channel = channelsResponse.items.find(
+        (c) => c.username?.toLowerCase() === lowerUsername
+      );
+
+      if (!channel) {
+        setError("Канал не найден в каталоге");
+        return;
+      }
+
+      setSelectedChannels([...selectedChannels, { username, channelId: channel.id }]);
+      setNewChannelInput("");
+      setError(null);
+    } catch (err) {
+      console.error("Failed to look up channel:", err);
+      setError("Не удалось найти канал");
+    }
   };
 
   const removeChannel = (username: string) => {
@@ -158,7 +174,7 @@ export function CreatePlacementsDialog({
       await placementsApi.createBulk(workspaceId, projectId, {
         creative_id: creativeId || undefined,
         channels: selectedChannels.map((c) => ({
-          username: c.username,
+          channel_id: c.channelId,
           status: DEFAULT_STATUS,
         })),
         details: Object.keys(details).length > 0 ? details : undefined,
diff --git a/lib/api/placements.ts b/lib/api/placements.ts
index 24a9ecd..d9dcc8d 100644
--- a/lib/api/placements.ts
+++ b/lib/api/placements.ts
@@ -52,7 +52,7 @@ export const placementsApi = {
     data: {
       creative_id?: string;
       channels: Array<{
-        username: string;
+        channel_id: string;
         status?: string;
         comment?: string;
         details?: {