diff --git a/Extension/Controller/EditAsiento.php b/Extension/Controller/EditAsiento.php
new file mode 100644
index 0000000..f8cea69
--- /dev/null
+++ b/Extension/Controller/EditAsiento.php
@@ -0,0 +1,27 @@
+<?php
+/**
+ * This file is part of Proyectos plugin for FacturaScripts
+ * Copyright (C) 2026 Carlos Garcia Gomez <carlos@facturascripts.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+namespace FacturaScripts\Plugins\Proyectos\Extension\Controller;
+
+use FacturaScripts\Plugins\Proyectos\Extension\Traits\ProjectControllerSalesPurchases;
+
+class EditAsiento
+{
+    use ProjectControllerSalesPurchases;
+}
diff --git a/Extension/XMLView/EditAsiento.xml b/Extension/XMLView/EditAsiento.xml
deleted file mode 100644
index 1c63766..0000000
--- a/Extension/XMLView/EditAsiento.xml
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<view>
-    <columns>
-        <group name="data" numcolumns="12">
-            <column name="project" titleurl="ListProyecto" order="105">
-                <widget type="autocomplete" fieldname="idproyecto" onclick="EditProyecto">
-                    <values source="proyectos" fieldcode="idproyecto" fieldtitle="nombre"/>
-                </widget>
-            </column>
-        </group>
-    </columns>
-</view>
\ No newline at end of file
diff --git a/Init.php b/Init.php
index 87d731d..9c805c7 100644
--- a/Init.php
+++ b/Init.php
@@ -19,6 +19,7 @@
 
 namespace FacturaScripts\Plugins\Proyectos;
 
+use FacturaScripts\Core\Lib\AjaxForms\AccountingHeaderHTML;
 use FacturaScripts\Core\Lib\AjaxForms\PurchasesHeaderHTML;
 use FacturaScripts\Core\Lib\AjaxForms\SalesHeaderHTML;
 use FacturaScripts\Core\Base\DataBase;
@@ -66,6 +67,7 @@ public function init(): void
         $this->loadExtension(new Extension\Controller\DocumentStitcher());
         $this->loadExtension(new Extension\Controller\EditAlbaranCliente());
         $this->loadExtension(new Extension\Controller\EditAlbaranProveedor());
+        $this->loadExtension(new Extension\Controller\EditAsiento());
         $this->loadExtension(new Extension\Controller\EditCliente());
         $this->loadExtension(new Extension\Controller\EditFacturaCliente());
         $this->loadExtension(new Extension\Controller\EditFacturaProveedor());
@@ -88,6 +90,7 @@ public function init(): void
         $this->loadExtension(new Extension\Model\Stock());
         $this->loadExtension(new Extension\Model\FacturaProgramada());
 
+        AccountingHeaderHTML::addMod(new Mod\AccountingHeaderHTMLMod());
         PurchasesHeaderHTML::addMod(new Mod\PurchasesHeaderHTMLMod());
         SalesHeaderHTML::addMod(new Mod\SalesHeaderHTMLMod());
 
diff --git a/Mod/AccountingHeaderHTMLMod.php b/Mod/AccountingHeaderHTMLMod.php
new file mode 100644
index 0000000..3e62143
--- /dev/null
+++ b/Mod/AccountingHeaderHTMLMod.php
@@ -0,0 +1,100 @@
+<?php
+/**
+ * This file is part of Proyectos plugin for FacturaScripts
+ * Copyright (C) 2026 Carlos Garcia Gomez <carlos@facturascripts.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+namespace FacturaScripts\Plugins\Proyectos\Mod;
+
+use FacturaScripts\Core\Contract\AccountingModInterface;
+use FacturaScripts\Core\Tools;
+use FacturaScripts\Dinamic\Model\Asiento;
+use FacturaScripts\Dinamic\Model\Proyecto;
+use FacturaScripts\Dinamic\Lib\AssetManager;
+
+/**
+ * Description of AccountingHeaderHTMLMod
+ *
+ * @author Esteban Sánchez <esteban@factura.city>
+ */
+class AccountingHeaderHTMLMod implements AccountingModInterface
+{
+    public function apply(Asiento &$model, array $formData): void
+    {
+    }
+
+    public function applyBefore(Asiento &$model, array $formData): void
+    {
+        $model->idproyecto = isset($formData['idproyecto']) && $formData['idproyecto'] ? $formData['idproyecto'] : null;
+    }
+
+    public function assets(): void
+    {
+        $route = Tools::config('route');
+        AssetManager::add('js', $route . '/Dinamic/Assets/JS/AutocompleteProject.js');
+    }
+
+    public function newBtnFields(): array
+    {
+        return [];
+    }
+
+    public function newFields(): array
+    {
+        return ['proyecto'];
+    }
+
+    public function renderField(Asiento $model, string $field): ?string
+    {
+        if ($field === 'proyecto') {
+            return self::proyecto($model);
+        }
+
+        return null;
+    }
+
+    private static function proyecto(Asiento $model): string
+    {
+        $value = '';
+        $project = new Proyecto();
+        if ($model->idproyecto && $project->load($model->idproyecto)) {
+            $value = $project->idproyecto . ' | ' . $project->nombre;
+        }
+
+        $html = '<div class="col-sm-6 col-md-4 col-lg-2">'
+            . '<a href="' . $project->url() . '">' . Tools::trans('project') . '</a>'
+            . '<div class="input-group">'
+            . '';
+
+        if ($model->editable && $model->idproyecto) {
+            $html .= '<button type="button" id="deleteProject" class="btn btn-warning">'
+                . '<i class="fa-solid fa-times" aria-hidden="true"></i>'
+                . '</button>';
+        } else {
+            $html .= '<span id="searchProject" class="input-group-text">'
+                . '<i class="fa-solid fa-search fa-fw"></i>'
+                . '</span>';
+        }
+
+        $disabled = $model->editable ? '' : 'disabled';
+        $html .= ''
+            . '<input type="hidden" name="idproyecto" value="' . $model->idproyecto . '">'
+            . '<input type="text" id="findProjectInput" class="form-control" value="' . $value . '" ' . $disabled . '/>'
+            . '</div>'
+            . '</div>';
+        return $html;
+    }
+}