diff --git a/packages/core/src/Core/Model/Sale/Invoice.php b/packages/core/src/Core/Model/Sale/Invoice.php
index c6feb474..9ea65e27 100644
--- a/packages/core/src/Core/Model/Sale/Invoice.php
+++ b/packages/core/src/Core/Model/Sale/Invoice.php
@@ -106,9 +106,9 @@ class Invoice extends BaseSale
     private $subTotal;
 
     /**
-     * @var string
+     * @var string[]
      */
-    private $observacion;
+    private array $observacion = [];
 
     /**
      * @var Address
@@ -436,19 +436,19 @@ public function setSubTotal(?float $subTotal): Invoice
     }
 
     /**
-     * @return string
+     * @return array
      */
-    public function getObservacion(): ?string
+    public function getObservacion(): array
     {
         return $this->observacion;
     }
 
     /**
-     * @param string $observacion
+     * @param array $observacion
      *
      * @return Invoice
      */
-    public function setObservacion(?string $observacion): Invoice
+    public function setObservacion(array $observacion): Invoice
     {
         $this->observacion = $observacion;
 
diff --git a/packages/report/src/Report/Templates/invoice2.html.twig b/packages/report/src/Report/Templates/invoice2.html.twig
index 0b24d509..47172941 100644
--- a/packages/report/src/Report/Templates/invoice2.html.twig
+++ b/packages/report/src/Report/Templates/invoice2.html.twig
@@ -213,6 +213,11 @@
                 <td class="total">{{ moneda }}{{ det.mtoValorVenta }}</td>
             </tr>
         {% endfor %}
+        <tr>
+        {% for obs in doc.observacion %}
+            <span>{{ obs }}</span><br>
+        {% endfor %}
+        </tr>
         </tbody>
         <tfoot>
         <tr>
diff --git a/packages/xml/src/Xml/Templates/invoice2.1.xml.twig b/packages/xml/src/Xml/Templates/invoice2.1.xml.twig
index 72c66b74..9f538adb 100644
--- a/packages/xml/src/Xml/Templates/invoice2.1.xml.twig
+++ b/packages/xml/src/Xml/Templates/invoice2.1.xml.twig
@@ -19,9 +19,9 @@
     {% for leg in doc.legends %}
     <cbc:Note languageLocaleID="{{ leg.code }}"><![CDATA[{{ leg.value }}]]></cbc:Note>
     {% endfor %}
-    {% if doc.observacion %}
-    <cbc:Note><![CDATA[{{ doc.observacion }}]]></cbc:Note>
-    {% endif %}
+    {% for obs in doc.observacion %}
+    <cbc:Note><![CDATA[{{ obs }}]]></cbc:Note>
+    {% endfor %}
     <cbc:DocumentCurrencyCode>{{ doc.tipoMoneda }}</cbc:DocumentCurrencyCode>
     {% if doc.compra %}
     <cac:OrderReference>