diff --git a/supabase/functions/carbone-io-wrapper/index.ts b/supabase/functions/carbone-io-wrapper/index.ts
index 62cf1bd..f4d625e 100644
--- a/supabase/functions/carbone-io-wrapper/index.ts
+++ b/supabase/functions/carbone-io-wrapper/index.ts
@@ -18,6 +18,7 @@ const ActionSchema = z.object({
 const DownloadReportSchema = z.object({
   action: z.literal("downloadReport"),
   plan_estudio_id: z.string().min(1),
+  body: z.record(z.unknown()),
 });
 
 type DownloadReportInput = z.infer<typeof DownloadReportSchema>;
@@ -29,10 +30,10 @@ function getAuthHeader(req: Request): string | null {
 async function loadPlanDatos(
   supabase: ReturnType<typeof createClient<Database>>,
   planEstudioId: string,
-): Promise<Json> {
+): Promise<{ datos: Json; estructura_id: string }> {
   const { data, error } = await supabase
     .from("planes_estudio")
-    .select("datos")
+    .select("datos, estructura_id")
     .eq("id", planEstudioId)
     .maybeSingle();
 
@@ -52,7 +53,48 @@ async function loadPlanDatos(
       { plan_estudio_id: planEstudioId },
     );
   }
-  return data.datos;
+
+  return {
+    datos: data.datos,
+    estructura_id: data.estructura_id,
+  };
+}
+
+async function loadTemplateIdForEstructura(
+  supabase: ReturnType<typeof createClient<Database>>,
+  estructuraId: string,
+): Promise<string> {
+  const { data, error } = await supabase
+    .from("estructuras_plan")
+    .select("template_id")
+    .eq("id", estructuraId)
+    .maybeSingle();
+
+  if (error) {
+    throw new HttpError(
+      500,
+      "Error consultando la estructura del plan.",
+      "DB_ERROR",
+      { message: error.message, details: error.details, hint: error.hint },
+    );
+  }
+  if (!data) {
+    throw new HttpError(
+      404,
+      "Estructura del plan no encontrada.",
+      "NOT_FOUND",
+      { estructura_id: estructuraId },
+    );
+  }
+  if (!data.template_id) {
+    throw new HttpError(
+      409,
+      "La estructura del plan no tiene template_id configurado.",
+      "MISSING_TEMPLATE_ID",
+      { estructura_id: estructuraId },
+    );
+  }
+  return data.template_id;
 }
 
 Deno.serve(async (req: Request): Promise<Response> => {
@@ -110,10 +152,9 @@ Deno.serve(async (req: Request): Promise<Response> => {
     }
 
     const CARBONE_API_TOKEN = Deno.env.get("CARBONE_API_TOKEN");
-    const CARBONE_TEMPLATE_ID = Deno.env.get("CARBONE_TEMPLATE_ID");
     const CARBONE_BASE_URL = Deno.env.get("CARBONE_BASE_URL") ||
       "https://carbone.lci.ulsa.mx";
-    if (!CARBONE_API_TOKEN || !CARBONE_TEMPLATE_ID) {
+    if (!CARBONE_API_TOKEN) {
       throw new HttpError(
         500,
         "Configuración del servidor incompleta.",
@@ -121,7 +162,6 @@ Deno.serve(async (req: Request): Promise<Response> => {
         {
           missing: [
             !CARBONE_API_TOKEN ? "CARBONE_API_TOKEN" : null,
-            !CARBONE_TEMPLATE_ID ? "CARBONE_TEMPLATE_ID" : null,
           ].filter(Boolean),
         },
       );
@@ -140,12 +180,22 @@ Deno.serve(async (req: Request): Promise<Response> => {
           bodyUnknown,
         );
 
-        const datos = await loadPlanDatos(supabase, input.plan_estudio_id);
+        const { datos, estructura_id } = await loadPlanDatos(
+          supabase,
+          input.plan_estudio_id,
+        );
+        const templateId = await loadTemplateIdForEstructura(
+          supabase,
+          estructura_id,
+        );
         const carbone = new CarboneClient(CARBONE_BASE_URL, CARBONE_API_TOKEN);
 
+        const { data: _ignoredData, ...extraBody } = input.body;
+
+        console.log("body:", extraBody);
         const result = await carbone.render(
-          CARBONE_TEMPLATE_ID,
-          { data: datos, convertTo: "pdf" },
+          templateId,
+          { data: datos, ...extraBody },
           { download: true },
         );
 
@@ -196,18 +246,36 @@ Deno.serve(async (req: Request): Promise<Response> => {
           { action },
         );
     }
-  } catch (err) {
-    const error = err instanceof HttpError ? err : new HttpError(
-      500,
-      "Error interno del servidor.",
-      "INTERNAL_SERVER_ERROR",
-      {
-        original: err instanceof Error
-          ? { message: err.message, stack: err.stack }
-          : err,
-      },
+  } catch (error) {
+    if (error instanceof HttpError) {
+      console.error(
+        `[${new Date().toISOString()}][${functionName}] ⚠️ Handled Error:`,
+        {
+          message: error.message,
+          code: error.code,
+          internalDetails: error.internalDetails || "N/A",
+        },
+      );
+
+      return sendError(error.status, error.message, error.code);
+    }
+
+    const unexpectedError = error instanceof Error
+      ? error
+      : new Error(String(error));
+
+    console.error(
+      `[${
+        new Date().toISOString()
+      }][${functionName}] 💥 CRITICAL UNHANDLED ERROR:`,
+      unexpectedError.stack || unexpectedError.message,
+    );
+
+    return sendError(
+      500,
+      "Ocurrió un error inesperado en el servidor.",
+      "INTERNAL_SERVER_ERROR",
     );
-    return sendError(error.status, error.message, error.code);
   }
 });