diff --git a/app/src/Service/Contabilidad/Cartola/withSubBancos.php b/app/src/Service/Contabilidad/Cartola/withSubBancos.php
new file mode 100644
index 0000000..c49c3f9
--- /dev/null
+++ b/app/src/Service/Contabilidad/Cartola/withSubBancos.php
@@ -0,0 +1,36 @@
+<?php
+namespace Incoviba\Service\Contabilidad\Cartola;
+
+use Incoviba\Common\Ideal\Cartola\Banco;
+use Psr\Http\Message\UploadedFileInterface;
+
+trait withSubBancos
+{
+    protected array $subBancos;
+    public function registerSub(Banco $sub): self
+    {
+        $this->subBancos []= $sub;
+        return $this;
+    }
+    public function getSubBanco(string $filename): Banco
+    {
+        foreach ($this->subBancos as $subBanco) {
+            if ($subBanco->is($filename)) {
+                return $subBanco;
+            }
+        }
+        return $this;
+    }
+    public function process(UploadedFileInterface $file): array
+    {
+        $filename = $this->processUploadedFile($file);
+        try {
+            $subBanco = $this->getSubBanco($filename);
+            $data = $subBanco->processFile($filename);
+            return $subBanco->mapColumns($data);
+        } catch (InvalidArgumentException) {
+            $data = parent::processFile($filename);
+            return $this->mapColumns($data);
+        }
+    }
+}