diff --git a/app/Services/EDocument/Standards/Verifactu.php b/app/Services/EDocument/Standards/Verifactu.php
index 6527205da9..d325ce9390 100644
--- a/app/Services/EDocument/Standards/Verifactu.php
+++ b/app/Services/EDocument/Standards/Verifactu.php
@@ -29,12 +29,16 @@ use App\Services\EDocument\Standards\Verifactu\RegistroAlta;
 use App\Services\EDocument\Standards\Verifactu\RegistroModificacion;
 use App\Services\EDocument\Standards\Verifactu\Models\Invoice as VerifactuInvoice;
 use App\Services\EDocument\Standards\Verifactu\Models\InvoiceModification;
+use App\Services\EDocument\Standards\Verifactu\AeatClient;
 
 class Verifactu extends AbstractService
 {
 
+    private AeatClient $aeat_client;
+    
     public function __construct(public Invoice $invoice)
     {  
+        $this->aeat_client = new AeatClient();
     }
 
     /**
@@ -50,15 +54,55 @@ class Verifactu extends AbstractService
         //determine the current status of the invoice.
         $document = new RegistroAlta($this->invoice);
 
+        $huella = '';
+
         //1. new => RegistraAlta
         if($v_logs->count() >= 1){
             $v_log = $v_logs->first();
-            
+            $huella = $v_log->hash;
             $document = InvoiceModification::fromInvoice($this->invoice, $v_log->deserialize());    
         }
 
-
         //3. cancelled => RegistroAnulacion
+
+        $new_huella = $this->calculateHash($document, $huella); // careful with this! we'll need to reference this later
+        $document->setHuella($new_huella);
+
+        $soapXml = $document->toSoapEnvelope();
+        
+    }
+        
+    /**
+     * calculateHash
+     *
+     * @param  mixed $document
+     * @param  string $huella
+     * @return string
+     */
+    public function calculateHash($document, string $huella): string
+    {
+        $idEmisorFactura = $document->getIdEmisorFactura();
+        $numSerieFactura = $document->getNumSerieFactura();
+        $fechaExpedicionFactura = $document->getFechaExpedicionFactura();
+        $tipoFactura = $document->getTipoFactura();
+        $cuotaTotal = $document->getCuotaTotal();
+        $importeTotal = $document->getImporteTotal();
+        $fechaHoraHusoGenRegistro = $document->getFechaHoraHusoGenRegistro();
+        
+        $hashInput = "IDEmisorFactura={$idEmisorFactura}&" .
+            "NumSerieFactura={$numSerieFactura}&" .
+            "FechaExpedicionFactura={$fechaExpedicionFactura}&" .
+            "TipoFactura={$tipoFactura}&" .
+            "CuotaTotal={$cuotaTotal}&" .
+            "ImporteTotal={$importeTotal}&" .
+            "Huella={$huella}&" .
+            "FechaHoraHusoGenRegistro={$fechaHoraHusoGenRegistro}";
+
+        return strtoupper(hash('sha256', $hashInput));
     }
     
+    public function send(string $soapXml): array
+    {
+        return $this->aeat_client->send($soapXml);
+    }
 }
\ No newline at end of file
diff --git a/app/Services/EDocument/Standards/Verifactu/Models/InvoiceCancellation.php b/app/Services/EDocument/Standards/Verifactu/Models/InvoiceCancellation.php
new file mode 100644
index 0000000000..0821fad575
--- /dev/null
+++ b/app/Services/EDocument/Standards/Verifactu/Models/InvoiceCancellation.php
@@ -0,0 +1,332 @@
+<?php
+
+namespace App\Services\EDocument\Standards\Verifactu\Models;
+
+use App\Models\Invoice;
+
+/**
+ * InvoiceCancellation - Invoice Cancellation for Verifactu
+ * 
+ * This class generates the XML structure for cancelling invoices in the Verifactu system.
+ * It follows the specific format required by the Spanish Tax Agency (AEAT).
+ */
+class InvoiceCancellation extends BaseXmlModel implements XmlModelInterface
+{
+    protected string $idVersion = '1.1';
+    protected string $numSerieFacturaEmisor;
+    protected string $fechaExpedicionFacturaEmisor;
+    protected string $nifEmisor;
+    protected string $huellaFactura;
+    protected string $estado = '02'; // 02 means 'Invoice cancelled'
+    protected string $descripcionEstado = 'Factura anulada por error';
+
+    public function __construct()
+    {
+        // Default constructor
+    }
+
+    /**
+     * Create cancellation from an existing invoice
+     */
+    public static function fromInvoice(Invoice $invoice, string $huella = ''): self
+    {
+        $cancellation = new self();
+        
+        $cancellation->setNumSerieFacturaEmisor($invoice->number);
+        $cancellation->setFechaExpedicionFacturaEmisor($invoice->date);
+        $cancellation->setNifEmisor($invoice->company->settings->vat_number ?? 'B12345678');
+        $cancellation->setHuellaFactura($huella);
+        
+        return $cancellation;
+    }
+
+    // Getters and Setters
+    public function getIdVersion(): string
+    {
+        return $this->idVersion;
+    }
+
+    public function setIdVersion(string $idVersion): self
+    {
+        $this->idVersion = $idVersion;
+        return $this;
+    }
+
+    public function getNumSerieFacturaEmisor(): string
+    {
+        return $this->numSerieFacturaEmisor;
+    }
+
+    public function setNumSerieFacturaEmisor(string $numSerieFacturaEmisor): self
+    {
+        $this->numSerieFacturaEmisor = $numSerieFacturaEmisor;
+        return $this;
+    }
+
+    public function getFechaExpedicionFacturaEmisor(): string
+    {
+        return $this->fechaExpedicionFacturaEmisor;
+    }
+
+    public function setFechaExpedicionFacturaEmisor(string $fechaExpedicionFacturaEmisor): self
+    {
+        $this->fechaExpedicionFacturaEmisor = $fechaExpedicionFacturaEmisor;
+        return $this;
+    }
+
+    public function getNifEmisor(): string
+    {
+        return $this->nifEmisor;
+    }
+
+    public function setNifEmisor(string $nifEmisor): self
+    {
+        $this->nifEmisor = $nifEmisor;
+        return $this;
+    }
+
+    public function getHuellaFactura(): string
+    {
+        return $this->huellaFactura;
+    }
+
+    public function setHuellaFactura(string $huellaFactura): self
+    {
+        $this->huellaFactura = $huellaFactura;
+        return $this;
+    }
+
+    public function getEstado(): string
+    {
+        return $this->estado;
+    }
+
+    public function setEstado(string $estado): self
+    {
+        $this->estado = $estado;
+        return $this;
+    }
+
+    public function getDescripcionEstado(): string
+    {
+        return $this->descripcionEstado;
+    }
+
+    public function setDescripcionEstado(string $descripcionEstado): self
+    {
+        $this->descripcionEstado = $descripcionEstado;
+        return $this;
+    }
+
+    /**
+     * Generate the XML structure for the cancellation
+     */
+    public function toXml(\DOMDocument $doc): \DOMElement
+    {
+        // Create root element with proper namespaces
+        $root = $doc->createElementNS('https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/suministro/FacturaLR.xsd', 'SuministroLRFacturas');
+        
+        // Add namespaces
+        $root->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:ds', 'http://www.w3.org/2000/09/xmldsig#');
+        $root->setAttribute('Version', $this->idVersion);
+
+        // Create LRFacturaEntrada
+        $lrFacturaEntrada = $doc->createElementNS('https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/suministro/FacturaLR.xsd', 'LRFacturaEntrada');
+        $root->appendChild($lrFacturaEntrada);
+
+        // Create IDFactura
+        $idFactura = $doc->createElementNS('https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/suministro/FacturaLR.xsd', 'IDFactura');
+        $lrFacturaEntrada->appendChild($idFactura);
+
+        // Create IDEmisorFactura
+        $idEmisorFactura = $doc->createElementNS('https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/suministro/FacturaLR.xsd', 'IDEmisorFactura');
+        $idFactura->appendChild($idEmisorFactura);
+
+        // Add NumSerieFacturaEmisor
+        $idEmisorFactura->appendChild($doc->createElementNS('https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/suministro/FacturaLR.xsd', 'NumSerieFacturaEmisor', $this->numSerieFacturaEmisor));
+
+        // Add FechaExpedicionFacturaEmisor
+        $idEmisorFactura->appendChild($doc->createElementNS('https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/suministro/FacturaLR.xsd', 'FechaExpedicionFacturaEmisor', $this->fechaExpedicionFacturaEmisor));
+
+        // Add NIFEmisor
+        $idEmisorFactura->appendChild($doc->createElementNS('https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/suministro/FacturaLR.xsd', 'NIFEmisor', $this->nifEmisor));
+
+        // Add HuellaFactura
+        $idEmisorFactura->appendChild($doc->createElementNS('https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/suministro/FacturaLR.xsd', 'HuellaFactura', $this->huellaFactura));
+
+        // Create EstadoFactura
+        $estadoFactura = $doc->createElementNS('https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/suministro/FacturaLR.xsd', 'EstadoFactura');
+        $lrFacturaEntrada->appendChild($estadoFactura);
+
+        // Add Estado
+        $estadoFactura->appendChild($doc->createElementNS('https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/suministro/FacturaLR.xsd', 'Estado', $this->estado));
+
+        // Add DescripcionEstado
+        $estadoFactura->appendChild($doc->createElementNS('https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/suministro/FacturaLR.xsd', 'DescripcionEstado', $this->descripcionEstado));
+
+        return $root;
+    }
+
+    /**
+     * Generate XML string
+     */
+    public function toXmlString(): string
+    {
+        $doc = new \DOMDocument('1.0', 'UTF-8');
+        $doc->preserveWhiteSpace = false;
+        $doc->formatOutput = true;
+
+        $root = $this->toXml($doc);
+        $doc->appendChild($root);
+
+        return $doc->saveXML();
+    }
+
+    /**
+     * Generate SOAP envelope for web service communication
+     */
+    public function toSoapEnvelope(): string
+    {
+        // Create the SOAP document
+        $soapDoc = new \DOMDocument('1.0', 'UTF-8');
+        $soapDoc->preserveWhiteSpace = false;
+        $soapDoc->formatOutput = true;
+
+        // Create SOAP envelope with namespaces
+        $envelope = $soapDoc->createElementNS('http://schemas.xmlsoap.org/soap/envelope/', 'soapenv:Envelope');
+        $envelope->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:soapenv', 'http://schemas.xmlsoap.org/soap/envelope/');
+        $envelope->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:sum', 'https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/tike/cont/ws/SuministroLR.xsd');
+        $envelope->setAttributeNS('http://www.w3.org/2000/xmlns/', 'xmlns:sum1', 'https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/tike/cont/ws/SuministroInformacion.xsd');
+        
+        $soapDoc->appendChild($envelope);
+
+        // Create Header
+        $header = $soapDoc->createElementNS('http://schemas.xmlsoap.org/soap/envelope/', 'soapenv:Header');
+        $envelope->appendChild($header);
+
+        // Create Body
+        $body = $soapDoc->createElementNS('http://schemas.xmlsoap.org/soap/envelope/', 'soapenv:Body');
+        $envelope->appendChild($body);
+
+        // Create RegFactuSistemaFacturacion
+        $regFactu = $soapDoc->createElementNS('https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/tike/cont/ws/SuministroLR.xsd', 'sum:RegFactuSistemaFacturacion');
+        $body->appendChild($regFactu);
+
+        // Create Cabecera
+        $cabecera = $soapDoc->createElementNS('https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/tike/cont/ws/SuministroLR.xsd', 'sum:Cabecera');
+        $regFactu->appendChild($cabecera);
+
+        // Create ObligadoEmision
+        $obligadoEmision = $soapDoc->createElementNS('https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/tike/cont/ws/SuministroInformacion.xsd', 'sum1:ObligadoEmision');
+        $cabecera->appendChild($obligadoEmision);
+
+        // Add ObligadoEmision content (using default values for now)
+        $obligadoEmision->appendChild($soapDoc->createElementNS('https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/tike/cont/ws/SuministroInformacion.xsd', 'sum1:NombreRazon', 'Test Company'));
+        $obligadoEmision->appendChild($soapDoc->createElementNS('https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/tike/cont/ws/SuministroInformacion.xsd', 'sum1:NIF', $this->nifEmisor));
+
+        // Create RegistroFactura
+        $registroFactura = $soapDoc->createElementNS('https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/tike/cont/ws/SuministroLR.xsd', 'sum:RegistroFactura');
+        $regFactu->appendChild($registroFactura);
+
+        // Import your existing XML into the RegistroFactura
+        $yourXmlDoc = new \DOMDocument();
+        $yourXmlDoc->loadXML($this->toXmlString());
+        
+        // Import the root element from your XML
+        $importedNode = $soapDoc->importNode($yourXmlDoc->documentElement, true);
+        $registroFactura->appendChild($importedNode);
+
+        return $soapDoc->saveXML();
+    }
+
+    /**
+     * Parse from DOM element
+     */
+    public static function fromDOMElement(\DOMElement $element): self
+    {
+        $cancellation = new self();
+
+        // Parse IDVersion
+        $idVersion = $element->getAttribute('Version');
+        if ($idVersion) {
+            $cancellation->setIdVersion($idVersion);
+        }
+
+        // Parse LRFacturaEntrada
+        $lrFacturaEntrada = $element->getElementsByTagNameNS('https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/suministro/FacturaLR.xsd', 'LRFacturaEntrada')->item(0);
+        if ($lrFacturaEntrada) {
+            // Parse IDFactura
+            $idFactura = $lrFacturaEntrada->getElementsByTagNameNS('https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/suministro/FacturaLR.xsd', 'IDFactura')->item(0);
+            if ($idFactura) {
+                $idEmisorFactura = $idFactura->getElementsByTagNameNS('https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/suministro/FacturaLR.xsd', 'IDEmisorFactura')->item(0);
+                if ($idEmisorFactura) {
+                    // Parse NumSerieFacturaEmisor
+                    $numSerie = $cancellation->getElementValue($idEmisorFactura, 'NumSerieFacturaEmisor', 'https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/suministro/FacturaLR.xsd');
+                    if ($numSerie) {
+                        $cancellation->setNumSerieFacturaEmisor($numSerie);
+                    }
+
+                    // Parse FechaExpedicionFacturaEmisor
+                    $fecha = $cancellation->getElementValue($idEmisorFactura, 'FechaExpedicionFacturaEmisor', 'https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/suministro/FacturaLR.xsd');
+                    if ($fecha) {
+                        $cancellation->setFechaExpedicionFacturaEmisor($fecha);
+                    }
+
+                    // Parse NIFEmisor
+                    $nif = $cancellation->getElementValue($idEmisorFactura, 'NIFEmisor', 'https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/suministro/FacturaLR.xsd');
+                    if ($nif) {
+                        $cancellation->setNifEmisor($nif);
+                    }
+
+                    // Parse HuellaFactura
+                    $huella = $cancellation->getElementValue($idEmisorFactura, 'HuellaFactura', 'https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/suministro/FacturaLR.xsd');
+                    if ($huella) {
+                        $cancellation->setHuellaFactura($huella);
+                    }
+                }
+            }
+
+            // Parse EstadoFactura
+            $estadoFactura = $lrFacturaEntrada->getElementsByTagNameNS('https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/suministro/FacturaLR.xsd', 'EstadoFactura')->item(0);
+            if ($estadoFactura) {
+                // Parse Estado
+                $estado = $cancellation->getElementValue($estadoFactura, 'Estado', 'https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/suministro/FacturaLR.xsd');
+                if ($estado) {
+                    $cancellation->setEstado($estado);
+                }
+
+                // Parse DescripcionEstado
+                $descripcion = $cancellation->getElementValue($estadoFactura, 'DescripcionEstado', 'https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/suministro/FacturaLR.xsd');
+                if ($descripcion) {
+                    $cancellation->setDescripcionEstado($descripcion);
+                }
+            }
+        }
+
+        return $cancellation;
+    }
+
+
+
+    /**
+     * Serialize for storage
+     */
+    public function serialize(): string
+    {
+        return serialize($this);
+    }
+
+    /**
+     * Unserialize from storage
+     */
+    public static function unserialize(string $data): self
+    {
+        $object = unserialize($data);
+        
+        if (!$object instanceof self) {
+            throw new \InvalidArgumentException('Invalid serialized data - not an InvoiceCancellation object');
+        }
+        
+        return $object;
+    }
+} 
\ No newline at end of file
diff --git a/app/Services/EDocument/Standards/Verifactu/Models/InvoiceModification.php b/app/Services/EDocument/Standards/Verifactu/Models/InvoiceModification.php
index d4905f2949..5b7d9c57bc 100644
--- a/app/Services/EDocument/Standards/Verifactu/Models/InvoiceModification.php
+++ b/app/Services/EDocument/Standards/Verifactu/Models/InvoiceModification.php
@@ -62,11 +62,19 @@ class InvoiceModification extends BaseXmlModel implements XmlModelInterface
         return $this;
     }
 
+    public function setHuella(string $huella): self
+    {
+        $this->getRegistroModificacion()->setHuella($huella);
+        return $this;
+    }
+
     /**
      * Create a modification from an existing invoice
      */
     public static function createFromInvoice(Invoice $originalInvoice, Invoice $modifiedInvoice): self
     {
+        $currentTimestamp = now()->format('Y-m-d\TH:i:s');
+        
         $modification = new self();
 
         // Set up cancellation record
@@ -107,11 +115,11 @@ class InvoiceModification extends BaseXmlModel implements XmlModelInterface
             ->setImporteTotal($modifiedInvoice->getImporteTotal())
             ->setEncadenamiento($modifiedInvoice->getEncadenamiento())
             ->setSistemaInformatico($modifiedInvoice->getSistemaInformatico())
-            ->setFechaHoraHusoGenRegistro($modifiedInvoice->getFechaHoraHusoGenRegistro())
+            ->setFechaHoraHusoGenRegistro($currentTimestamp)
             ->setNumRegistroAcuerdoFacturacion($modifiedInvoice->getNumRegistroAcuerdoFacturacion())
             ->setIdAcuerdoSistemaInformatico($modifiedInvoice->getIdAcuerdoSistemaInformatico())
             ->setTipoHuella($modifiedInvoice->getTipoHuella())
-            ->setHuella($modifiedInvoice->getHuella());
+            ->setHuella('PLACEHOLDER_HUELLA');
 
         $modification->setRegistroModificacion($modificationRecord);
 
diff --git a/tests/Feature/EInvoice/Verifactu/InvoiceCancellationTest.php b/tests/Feature/EInvoice/Verifactu/InvoiceCancellationTest.php
new file mode 100644
index 0000000000..8798eb2a9c
--- /dev/null
+++ b/tests/Feature/EInvoice/Verifactu/InvoiceCancellationTest.php
@@ -0,0 +1,442 @@
+<?php
+
+namespace Tests\Feature\EInvoice\Verifactu;
+
+use Tests\TestCase;
+use App\Models\User;
+use App\Models\Client;
+use App\Models\Account;
+use App\Models\Company;
+use App\Models\Invoice;
+use Faker\Factory as Faker;
+use App\Models\CompanyToken;
+use App\Models\ClientContact;
+use App\DataMapper\InvoiceItem;
+use App\DataMapper\ClientSettings;
+use App\DataMapper\CompanySettings;
+use App\Factory\CompanyUserFactory;
+use App\Services\EDocument\Standards\Verifactu\Models\InvoiceCancellation;
+
+class InvoiceCancellationTest extends TestCase
+{
+    private $user;
+    private $company;
+    private $token;
+    private $client;
+    private $faker;
+
+    private string $test_company_nif = 'A39200019';
+    private string $test_client_nif = 'A39200019';
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->faker = Faker::create();
+    }
+
+    private function buildTestInvoice(): Invoice
+    {
+        $account = Account::factory()->create([
+            'hosted_client_count' => 1000,
+            'created_at' => now(),
+            'updated_at' => now(),
+        ]);
+
+        $company = Company::factory()->create([
+            'account_id' => $account->id,
+            'created_at' => now(),
+            'updated_at' => now(),
+        ]);
+
+        $company_settings = CompanySettings::defaults();
+        $company_settings->currency_id = '3';
+        $company_settings->country_id = '724';
+        $company_settings->vat_number = $this->test_company_nif;
+
+        $company->settings = $company_settings;
+        $company->save();
+
+        $this->company = $company;
+
+        $user = User::factory()->create([
+            'account_id' => $account->id,
+            'email' => $this->faker->unique()->safeEmail(),
+            'confirmation_code' => $this->faker->unique()->uuid(),
+        ]);
+
+        $this->user = $user;
+
+        $user->companies()->attach($company->id, [
+            'account_id' => $account->id,
+            'is_owner' => 1,
+            'is_admin' => 1,
+            'is_locked' => 0,
+            'notifications' => CompanySettings::notificationDefaults(),
+            'settings' => null,
+        ]);
+
+
+        $company_token = new CompanyToken();
+        $company_token->user_id = $user->id;
+        $company_token->company_id = $company->id;
+        $company_token->account_id = $account->id;
+        $company_token->token = $this->faker->unique()->sha1();
+        $company_token->name = $this->faker->word();
+        $company_token->is_system = 0;
+
+        $company_token->save();
+
+        $client_settings = ClientSettings::defaults();
+        $client_settings->currency_id = '3';
+
+        $this->client = Client::factory()->create([
+            'user_id' => $this->user->id,
+            'company_id' => $this->company->id,
+            'name' => 'Test Client',
+            'address1' => 'Calle Mayor 123',
+            'city' => 'Madrid',
+            'state' => 'Madrid',
+            'postal_code' => '28001',
+            'country_id' => 724,
+            'vat_number' => $this->test_client_nif,
+            'balance' => 0,
+            'paid_to_date' => 0,
+            'settings' => $client_settings,
+        ]);
+
+        $line_items = [];
+
+        $item = new InvoiceItem();
+        $item->product_key = '1234567890';
+        $item->qty = 1;
+        $item->cost = 100;
+        $item->notes = 'Test item';
+        $item->tax_name1 = 'IVA';
+        $item->tax_rate1 = 21;
+
+        $line_items[] = $item;
+        
+        $invoice = Invoice::factory()->create([
+            'user_id' => $this->user->id,
+            'company_id' => $this->company->id,
+            'client_id' => $this->client->id,
+            'number' => 'INV-2024-001',
+            'date' => '2024-01-15',
+            'due_date' => now()->addDays(5)->format('Y-m-d'),
+            'status_id' => Invoice::STATUS_DRAFT,
+            'amount' => 121.00,
+            'balance' => 121.00,
+            'line_items' => $line_items,
+        ]);
+
+        $invoice = $invoice->calc()
+                        ->getInvoice()
+                        ->service()
+                        ->markSent()
+                        ->save();
+                        
+        return $invoice;
+    }
+
+    public function testInvoiceCancellationCreation()
+    {
+        $invoice = $this->buildTestInvoice();
+        
+        $huella = 'ABCD1234EF5678901234567890ABCDEF1234567890ABCDEF1234567890ABCDEF12';
+        
+        $cancellation = InvoiceCancellation::fromInvoice($invoice, $huella);
+        
+        $this->assertInstanceOf(InvoiceCancellation::class, $cancellation);
+        $this->assertEquals('INV-2024-001', $cancellation->getNumSerieFacturaEmisor());
+        $this->assertEquals('2024-01-15', $cancellation->getFechaExpedicionFacturaEmisor());
+        $this->assertEquals($this->test_company_nif, $cancellation->getNifEmisor());
+        $this->assertEquals($huella, $cancellation->getHuellaFactura());
+        $this->assertEquals('02', $cancellation->getEstado());
+        $this->assertEquals('Factura anulada por error', $cancellation->getDescripcionEstado());
+    }
+
+    public function testInvoiceCancellationXmlGeneration()
+    {
+        $invoice = $this->buildTestInvoice();
+        
+        $huella = 'ABCD1234EF5678901234567890ABCDEF1234567890ABCDEF1234567890ABCDEF12';
+        
+        $cancellation = InvoiceCancellation::fromInvoice($invoice, $huella);
+        
+        $xmlString = $cancellation->toXmlString();
+        
+        // Verify XML structure
+        $this->assertNotEmpty($xmlString);
+        $this->assertStringContainsString('<?xml version="1.0" encoding="UTF-8"?>', $xmlString);
+        $this->assertStringContainsString('SuministroLRFacturas', $xmlString);
+        $this->assertStringContainsString('xmlns:ds="http://www.w3.org/2000/09/xmldsig#"', $xmlString);
+        $this->assertStringContainsString('Version="1.1"', $xmlString);
+        
+        // Verify required elements
+        $this->assertStringContainsString('LRFacturaEntrada', $xmlString);
+        $this->assertStringContainsString('IDFactura', $xmlString);
+        $this->assertStringContainsString('IDEmisorFactura', $xmlString);
+        $this->assertStringContainsString('NumSerieFacturaEmisor', $xmlString);
+        $this->assertStringContainsString('FechaExpedicionFacturaEmisor', $xmlString);
+        $this->assertStringContainsString('NIFEmisor', $xmlString);
+        $this->assertStringContainsString('HuellaFactura', $xmlString);
+        $this->assertStringContainsString('EstadoFactura', $xmlString);
+        $this->assertStringContainsString('Estado', $xmlString);
+        $this->assertStringContainsString('DescripcionEstado', $xmlString);
+        
+        // Verify specific values
+        $this->assertStringContainsString('INV-2024-001', $xmlString);
+        $this->assertStringContainsString('2024-01-15', $xmlString);
+        $this->assertStringContainsString($this->test_company_nif, $xmlString);
+        $this->assertStringContainsString($huella, $xmlString);
+        $this->assertStringContainsString('02', $xmlString);
+        $this->assertStringContainsString('Factura anulada por error', $xmlString);
+    }
+
+
+    public function testInvoiceCancellationSoapEnvelope()
+    {
+        $invoice = $this->buildTestInvoice();
+        
+        $huella = 'ABCD1234EF5678901234567890ABCDEF1234567890ABCDEF1234567890ABCDEF12';
+        
+        $cancellation = InvoiceCancellation::fromInvoice($invoice, $huella);
+        
+        $soapEnvelope = $cancellation->toSoapEnvelope();
+        
+        // Verify SOAP structure
+        $this->assertNotEmpty($soapEnvelope);
+        $this->assertStringContainsString('soapenv:Envelope', $soapEnvelope);
+        $this->assertStringContainsString('xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"', $soapEnvelope);
+        $this->assertStringContainsString('xmlns:sum="https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/tike/cont/ws/SuministroLR.xsd"', $soapEnvelope);
+        $this->assertStringContainsString('xmlns:sum1="https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/tike/cont/ws/SuministroInformacion.xsd"', $soapEnvelope);
+        
+        // Verify SOAP body structure
+        $this->assertStringContainsString('soapenv:Header', $soapEnvelope);
+        $this->assertStringContainsString('soapenv:Body', $soapEnvelope);
+        $this->assertStringContainsString('sum:RegFactuSistemaFacturacion', $soapEnvelope);
+        $this->assertStringContainsString('sum:Cabecera', $soapEnvelope);
+        $this->assertStringContainsString('sum1:ObligadoEmision', $soapEnvelope);
+        $this->assertStringContainsString('sum:RegistroFactura', $soapEnvelope);
+        
+        // Verify the cancellation XML is embedded in SOAP
+        $this->assertStringContainsString('SuministroLRFacturas', $soapEnvelope);
+        $this->assertStringContainsString('LRFacturaEntrada', $soapEnvelope);
+    }
+
+
+    public function testInvoiceCancellationCustomValues()
+    {
+        $cancellation = new InvoiceCancellation();
+        
+        $cancellation->setNumSerieFacturaEmisor('CUSTOM-INV-001')
+                    ->setFechaExpedicionFacturaEmisor('2025-01-20')
+                    ->setNifEmisor('B87654321')
+                    ->setHuellaFactura('CUSTOM_HASH_1234567890ABCDEF')
+                    ->setEstado('01') // Different status
+                    ->setDescripcionEstado('Factura anulada por solicitud del cliente');
+        
+        $xmlString = $cancellation->toXmlString();
+        
+        // Verify custom values are in XML
+        $this->assertStringContainsString('CUSTOM-INV-001', $xmlString);
+        $this->assertStringContainsString('2025-01-20', $xmlString);
+        $this->assertStringContainsString('B87654321', $xmlString);
+        $this->assertStringContainsString('CUSTOM_HASH_1234567890ABCDEF', $xmlString);
+                $this->assertStringContainsString('01', $xmlString);
+        $this->assertStringContainsString('Factura anulada por solicitud del cliente', $xmlString);
+
+    }
+
+    public function testInvoiceCancellationSerialization()
+    {
+        $invoice = $this->buildTestInvoice();
+        
+        $cancellation = InvoiceCancellation::fromInvoice($invoice, 'TEST_HASH');
+        
+        // Serialize
+        $serialized = $cancellation->serialize();
+        $this->assertNotEmpty($serialized);
+        $this->assertIsString($serialized);
+        
+        // Deserialize
+        $deserialized = InvoiceCancellation::unserialize($serialized);
+        $this->assertInstanceOf(InvoiceCancellation::class, $deserialized);
+        
+        // Verify all properties are preserved
+        $this->assertEquals($cancellation->getNumSerieFacturaEmisor(), $deserialized->getNumSerieFacturaEmisor());
+        $this->assertEquals($cancellation->getFechaExpedicionFacturaEmisor(), $deserialized->getFechaExpedicionFacturaEmisor());
+        $this->assertEquals($cancellation->getNifEmisor(), $deserialized->getNifEmisor());
+        $this->assertEquals($cancellation->getHuellaFactura(), $deserialized->getHuellaFactura());
+        $this->assertEquals($cancellation->getEstado(), $deserialized->getEstado());
+                $this->assertEquals($cancellation->getDescripcionEstado(), $deserialized->getDescripcionEstado());
+
+    }
+
+    public function testInvoiceCancellationFromXml()
+    {
+        $invoice = $this->buildTestInvoice();
+        
+        $originalCancellation = InvoiceCancellation::fromInvoice($invoice, 'ORIGINAL_HASH');
+        $originalCancellation->setEstado('03')
+                           ->setDescripcionEstado('Factura anulada por duplicado');
+        
+        $xmlString = $originalCancellation->toXmlString();
+        
+        // Parse from XML
+        $parsedCancellation = InvoiceCancellation::fromXml($xmlString);
+        
+        // Verify all properties are correctly parsed
+        $this->assertEquals($originalCancellation->getNumSerieFacturaEmisor(), $parsedCancellation->getNumSerieFacturaEmisor());
+        $this->assertEquals($originalCancellation->getFechaExpedicionFacturaEmisor(), $parsedCancellation->getFechaExpedicionFacturaEmisor());
+        $this->assertEquals($originalCancellation->getNifEmisor(), $parsedCancellation->getNifEmisor());
+        $this->assertEquals($originalCancellation->getHuellaFactura(), $parsedCancellation->getHuellaFactura());
+        $this->assertEquals($originalCancellation->getEstado(), $parsedCancellation->getEstado());
+                $this->assertEquals($originalCancellation->getDescripcionEstado(), $parsedCancellation->getDescripcionEstado());
+
+    }
+
+    public function testInvoiceCancellationXmlValidation()
+    {
+        $invoice = $this->buildTestInvoice();
+        
+        $cancellation = InvoiceCancellation::fromInvoice($invoice, 'VALIDATION_HASH');
+        
+        $xmlString = $cancellation->toXmlString();
+        
+        // Verify XML is well-formed
+        $doc = new \DOMDocument();
+        $this->assertTrue($doc->loadXML($xmlString), 'Generated XML should be well-formed');
+        
+        // Verify required namespaces
+        $doc->loadXML($xmlString);
+        $root = $doc->documentElement;
+        
+        $this->assertEquals('SuministroLRFacturas', $root->nodeName);
+        $this->assertEquals('https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/suministro/FacturaLR.xsd', $root->getAttribute('xmlns'));
+        $this->assertEquals('http://www.w3.org/2000/09/xmldsig#', $root->getAttribute('xmlns:ds'));
+                $this->assertEquals('1.1', $root->getAttribute('Version'));
+
+    }
+
+    public function testInvoiceCancellationDifferentStatusCodes()
+    {
+        $invoice = $this->buildTestInvoice();
+        
+        $statusCodes = [
+            '01' => 'Factura anulada por solicitud del cliente',
+            '02' => 'Factura anulada por error',
+            '03' => 'Factura anulada por duplicado',
+            '04' => 'Factura anulada por otros motivos'
+        ];
+        
+        foreach ($statusCodes as $code => $description) {
+            $cancellation = InvoiceCancellation::fromInvoice($invoice, 'STATUS_HASH_' . $code);
+            $cancellation->setEstado($code)
+                        ->setDescripcionEstado($description);
+            
+            $xmlString = $cancellation->toXmlString();
+            
+                        $this->assertStringContainsString($code, $xmlString);
+            $this->assertStringContainsString($description, $xmlString);
+        }
+
+    }
+
+    public function testInvoiceCancellationWithNullValues()
+    {
+        $cancellation = new InvoiceCancellation();
+        
+        // Test with minimal required values
+        $cancellation->setNumSerieFacturaEmisor('MINIMAL-INV')
+                    ->setFechaExpedicionFacturaEmisor('2025-01-01')
+                    ->setNifEmisor('B12345678')
+                    ->setHuellaFactura('MINIMAL_HASH');
+        
+        $xmlString = $cancellation->toXmlString();
+        
+        // Should still generate valid XML with default values
+        $this->assertNotEmpty($xmlString);
+        $this->assertStringContainsString('MINIMAL-INV', $xmlString);
+        $this->assertStringContainsString('2025-01-01', $xmlString);
+        $this->assertStringContainsString('B12345678', $xmlString);
+        $this->assertStringContainsString('MINIMAL_HASH', $xmlString);
+                $this->assertStringContainsString('02', $xmlString); // Default estado
+        $this->assertStringContainsString('Factura anulada por error', $xmlString); // Default description
+
+    }
+
+    public function testInvoiceCancellationIntegrationWithVerifactu()
+    {
+        $invoice = $this->buildTestInvoice();
+        
+        // Simulate the integration with the main Verifactu class
+        $cancellation = InvoiceCancellation::fromInvoice($invoice, 'INTEGRATION_HASH');
+        
+        // Test XML generation
+        $xmlString = $cancellation->toXmlString();
+        $this->assertNotEmpty($xmlString);
+        
+        // Test SOAP envelope generation
+        $soapEnvelope = $cancellation->toSoapEnvelope();
+        $this->assertNotEmpty($soapEnvelope);
+        
+        // Test serialization for storage
+        $serialized = $cancellation->serialize();
+        $this->assertNotEmpty($serialized);
+        
+        // Test that the cancellation can be stored and retrieved
+        $deserialized = InvoiceCancellation::unserialize($serialized);
+        $this->assertInstanceOf(InvoiceCancellation::class, $deserialized);
+        
+                // Verify the deserialized object can still generate XML
+        $newXmlString = $deserialized->toXmlString();
+        $this->assertNotEmpty($newXmlString);
+        $this->assertEquals($xmlString, $newXmlString);
+
+    }
+
+    public function testInvoiceCancellationExactXmlFormat()
+    {
+        $invoice = $this->buildTestInvoice();
+        
+        $cancellation = InvoiceCancellation::fromInvoice($invoice, 'ABCD1234EF5678901234567890ABCDEF1234567890ABCDEF1234567890ABCDEF12');
+        
+        $xmlString = $cancellation->toXmlString();
+        
+        // Verify the exact XML structure matches the required format
+        $expectedElements = [
+            '<?xml version="1.0" encoding="UTF-8"?>',
+            '<SuministroLRFacturas',
+            'xmlns="https://www2.agenciatributaria.gob.es/static_files/common/internet/dep/aplicaciones/es/aeat/suministro/FacturaLR.xsd"',
+            'xmlns:ds="http://www.w3.org/2000/09/xmldsig#"',
+            'Version="1.1"',
+            '<LRFacturaEntrada>',
+            '<IDFactura>',
+            '<IDEmisorFactura>',
+            '<NumSerieFacturaEmisor>INV-2024-001</NumSerieFacturaEmisor>',
+            '<FechaExpedicionFacturaEmisor>2024-01-15</FechaExpedicionFacturaEmisor>',
+            '<NIFEmisor>A39200019</NIFEmisor>',
+            '<HuellaFactura>ABCD1234EF5678901234567890ABCDEF1234567890ABCDEF1234567890ABCDEF12</HuellaFactura>',
+            '</IDEmisorFactura>',
+            '</IDFactura>',
+            '<EstadoFactura>',
+            '<Estado>02</Estado>',
+            '<DescripcionEstado>Factura anulada por error</DescripcionEstado>',
+            '</EstadoFactura>',
+            '</LRFacturaEntrada>',
+            '</SuministroLRFacturas>'
+        ];
+        
+        foreach ($expectedElements as $element) {
+            $this->assertStringContainsString($element, $xmlString, "XML should contain: $element");
+        }
+        
+        // Verify XML is properly formatted and indented
+        $this->assertStringContainsString('  <LRFacturaEntrada>', $xmlString);
+        $this->assertStringContainsString('    <IDFactura>', $xmlString);
+                $this->assertStringContainsString('      <IDEmisorFactura>', $xmlString);
+        $this->assertStringContainsString('        <NumSerieFacturaEmisor>', $xmlString);
+    }
+} 
\ No newline at end of file
diff --git a/tests/Feature/EInvoice/Verifactu/VerifactuFeatureTest.php b/tests/Feature/EInvoice/Verifactu/VerifactuFeatureTest.php
index c30716a2ec..f7c49f4c9a 100644
--- a/tests/Feature/EInvoice/Verifactu/VerifactuFeatureTest.php
+++ b/tests/Feature/EInvoice/Verifactu/VerifactuFeatureTest.php
@@ -166,4 +166,54 @@ class VerifactuFeatureTest extends TestCase
 
         $this->assertNotNull($invoice);
     }
+
+    public function testInvoiceCancellation()
+    {
+        // Create a sample invoice
+        $invoice = $this->buildData();
+        
+        // Create cancellation from invoice
+        $cancellation = \App\Services\EDocument\Standards\Verifactu\Models\InvoiceCancellation::fromInvoice(
+            $invoice, 
+            'ABCD1234EF5678901234567890ABCDEF1234567890ABCDEF1234567890ABCDEF12'
+        );
+        
+        // Set custom cancellation details
+        $cancellation->setEstado('02') // 02 = Invoice cancelled
+                    ->setDescripcionEstado('Factura anulada por error');
+        
+        // Generate XML
+        $xmlString = $cancellation->toXmlString();
+        
+        // Verify XML structure
+        $this->assertNotEmpty($xmlString);
+        $this->assertStringContainsString('SuministroLRFacturas', $xmlString);
+        $this->assertStringContainsString('LRFacturaEntrada', $xmlString);
+        $this->assertStringContainsString('IDFactura', $xmlString);
+        $this->assertStringContainsString('EstadoFactura', $xmlString);
+        $this->assertStringContainsString('Estado', $xmlString);
+        $this->assertStringContainsString('02', $xmlString); // Cancelled status
+        
+        // Generate SOAP envelope
+        $soapEnvelope = $cancellation->toSoapEnvelope();
+        
+        // Verify SOAP structure
+        $this->assertNotEmpty($soapEnvelope);
+        $this->assertStringContainsString('soapenv:Envelope', $soapEnvelope);
+        $this->assertStringContainsString('RegFactuSistemaFacturacion', $soapEnvelope);
+        
+        // Test serialization
+        $serialized = $cancellation->serialize();
+        $this->assertNotEmpty($serialized);
+        
+        // Test deserialization
+        $deserialized = \App\Services\EDocument\Standards\Verifactu\Models\InvoiceCancellation::unserialize($serialized);
+        $this->assertEquals($cancellation->getNumSerieFacturaEmisor(), $deserialized->getNumSerieFacturaEmisor());
+        $this->assertEquals($cancellation->getEstado(), $deserialized->getEstado());
+        
+        // Test from XML
+        $fromXml = \App\Services\EDocument\Standards\Verifactu\Models\InvoiceCancellation::fromXml($xmlString);
+        $this->assertEquals($cancellation->getNumSerieFacturaEmisor(), $fromXml->getNumSerieFacturaEmisor());
+        $this->assertEquals($cancellation->getEstado(), $fromXml->getEstado());
+    }
 }
\ No newline at end of file