diff --git a/src/app/api/campaigns/create/route.ts b/src/app/api/campaigns/create/route.ts
index 1996d09..2940b89 100644
--- a/src/app/api/campaigns/create/route.ts
+++ b/src/app/api/campaigns/create/route.ts
@@ -247,6 +247,19 @@ export async function POST(req: Request) {
     // análise/entrega na Meta.
     const finalStatus = body.activate === true ? 'ACTIVE' : 'PAUSED';
 
+    const baseTargeting = targeting || { geo_locations: { countries: ['BR'] } };
+    const finalTargeting: Record<string, unknown> = {
+      ...baseTargeting,
+      targeting_automation: { advantage_audience: 0 },
+    };
+
+    // Sem identidade de Instagram, o anúncio não pode rodar em posicionamentos
+    // do Instagram (a Meta recusa com subcode 1772103). Nesse caso restringimos
+    // aos posicionamentos que não exigem IG (Facebook/Audience Network/Messenger).
+    if (!instagram_actor_id && !(baseTargeting as any).publisher_platforms) {
+      finalTargeting.publisher_platforms = ['facebook', 'audience_network', 'messenger'];
+    }
+
     const result = await createFullCampaign(mcpClient, {
       campaign_name,
       objective: finalObjective,
@@ -254,16 +267,7 @@ export async function POST(req: Request) {
       status: finalStatus,
       bid_strategy: finalBidStrategy,
       bid_amount: finalBidStrategy === 'LOWEST_COST_WITHOUT_CAP' ? undefined : finalBidAmount,
-      targeting: {
-        ...(targeting || {
-          geo_locations: {
-            countries: ['BR'],
-          },
-        }),
-        targeting_automation: {
-          advantage_audience: 0,
-        },
-      },
+      targeting: finalTargeting,
       page_id: finalPageId,
       instagram_actor_id: instagram_actor_id || undefined,
       image_urls,
diff --git a/src/lib/mcp/client.ts b/src/lib/mcp/client.ts
index cabf97c..24879f4 100644
--- a/src/lib/mcp/client.ts
+++ b/src/lib/mcp/client.ts
@@ -291,27 +291,32 @@ export async function callMetaTool(
           // O branch garante que ao menos vertical/horizontal existe.
           const squareHash = (pi.square || pi.vertical || pi.horizontal) as string;
 
+          // Sem IG, não declaramos posicionamentos de Instagram (a Meta exige
+          // identidade de IG pra eles — subcode 1772103).
+          const hasIg = !!args.instagram_actor_id;
+          const defaultPlatforms = hasIg
+            ? ['facebook', 'instagram', 'audience_network', 'messenger']
+            : ['facebook', 'audience_network', 'messenger'];
+
           const images: Array<{ hash: string; adlabels: Array<{ name: string }> }> = [
             { hash: squareHash, adlabels: [{ name: 'sq' }] },
           ];
           const rules: Array<Record<string, unknown>> = [
             // Regra padrão (mais ampla): cobre todos os posicionamentos.
             {
-              customization_spec: { publisher_platforms: ['facebook', 'instagram', 'audience_network', 'messenger'] },
+              customization_spec: { publisher_platforms: defaultPlatforms },
               image_label: { name: 'sq' },
             },
           ];
 
           if (pi.vertical && pi.vertical !== squareHash) {
             images.push({ hash: pi.vertical, adlabels: [{ name: 'vt' }] });
-            rules.push({
-              customization_spec: {
-                publisher_platforms: ['facebook', 'instagram'],
-                facebook_positions: ['story', 'facebook_reels'],
-                instagram_positions: ['story', 'reels'],
-              },
-              image_label: { name: 'vt' },
-            });
+            const verticalSpec: Record<string, unknown> = {
+              publisher_platforms: hasIg ? ['facebook', 'instagram'] : ['facebook'],
+              facebook_positions: ['story', 'facebook_reels'],
+            };
+            if (hasIg) verticalSpec.instagram_positions = ['story', 'reels'];
+            rules.push({ customization_spec: verticalSpec, image_label: { name: 'vt' } });
           }
 
           if (pi.horizontal && pi.horizontal !== squareHash) {