diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2b0a8a4..f9ad8ec 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,9 +5,16 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+
+## [2.0.11] - 2025-04-28
+
 ### Changed
 - Some enums removed.
 
+### Added
+- condicionIVAReceptorId and codigoConcepto on InvoiceObject.
+- Support for multiple observations on Invoice result.
+
 ## [2.0.10] - 2025-01-18
 ### Added
 - Some enums changed based on AFIP/ARCA.
diff --git a/src/Objects/InvoiceObject.php b/src/Objects/InvoiceObject.php
index 279d2cb..7e9d33b 100644
--- a/src/Objects/InvoiceObject.php
+++ b/src/Objects/InvoiceObject.php
@@ -24,6 +24,8 @@ class InvoiceObject extends FiscalDocumentDto
     /** @var ?int */
     public $codigoComprobante;
     /** @var ?int */
+    public $codigoConcepto;
+    /** @var ?int */
     public $codigoDocumento;
     /** @var ?int */
     public $numeroDocumento;
@@ -47,6 +49,8 @@ class InvoiceObject extends FiscalDocumentDto
     public $codigoMoneda = 'PES';
     /** @var int */
     public $cotizacionMoneda = 1;
+    /** @var ?int */
+    public $condicionIVAReceptorId;
     /** @var string */
     public $fechaServicioDesde;
     /** @var string */
diff --git a/src/Objects/Invoices/ConceptEnum.php b/src/Objects/Invoices/ConceptEnum.php
new file mode 100644
index 0000000..ea60a38
--- /dev/null
+++ b/src/Objects/Invoices/ConceptEnum.php
@@ -0,0 +1,21 @@
+<?php
+/**
+ * Copyright (C) 1997-2020 Reyesoft <info@reyesoft.com>.
+ *
+ * This file is part of php-afip-ws. php-afip-ws can not be copied and/or
+ * distributed without the express permission of Reyesoft
+ */
+
+declare(strict_types=1);
+
+namespace Multinexo\Objects\Invoices;
+
+/**
+ * https://www.arca.gob.ar/ws/documentacion/manuales/manual-desarrollador-ARCA-COMPG-v4-0.pdf.
+ */
+class ConceptEnum
+{
+    public const PRODUCTOS = 1;
+    public const SERVICIOS = 2;
+    public const PRODUCTOS_SERVICIOS = 3;
+}
diff --git a/src/WSFE/Wsfe.php b/src/WSFE/Wsfe.php
index 983b508..5aab1c2 100644
--- a/src/WSFE/Wsfe.php
+++ b/src/WSFE/Wsfe.php
@@ -69,8 +69,18 @@ private function parseResult(stdClass $response): InvoiceResultObject
 
         $result->cae = $response->CAE;
         $result->cae_expiration_date = $response->CAEFchVto;
-        if (isset($response->Observaciones)) {
-            $result->observation = $response->Observaciones->Obs->Msg . ' (' . $response->Observaciones->Obs->Code . ')';
+
+        if (!empty($response->Observaciones->Obs)) {
+            $messages = is_array($response->Observaciones->Obs)
+                ? $response->Observaciones->Obs
+            : [$response->Observaciones->Obs];
+            $result->observation = implode(PHP_EOL,
+                array_map(
+                function ($obs) {
+                    return $obs->Msg . ' (' . $obs->Code . ').';
+                },
+                $messages
+            ));
         }
 
         return $result;
@@ -285,6 +295,7 @@ private function parseFacturaArray(): void
                     'ImpIVA' => $factura->importeIVA,
                     'MonId' => $factura->codigoMoneda,
                     'MonCotiz' => $factura->cotizacionMoneda,
+                    'CondicionIVAReceptorId' => $factura->condicionIVAReceptorId,
                 ],
             ],
         ];