diff --git a/CRM/Bij1migratie/CsvFile.php b/CRM/Bij1migratie/CsvFile.php
index 1c8942e..a4c2258 100644
--- a/CRM/Bij1migratie/CsvFile.php
+++ b/CRM/Bij1migratie/CsvFile.php
@@ -2,6 +2,7 @@
 
 use CRM\Bij1migratie\Mapping\AirtableMapping;
 use CRM\Bij1migratie\Mapping\BetalingenMapping;
+use CRM\Bij1migratie\Mapping\ChargebacksMapping;
 use CRM_Bij1migratie_ExtensionUtil as E;
 
 /**
@@ -205,7 +206,7 @@ class CRM_Bij1migratie_CsvFile {
    * @throws
    */
   private function sanitizeBetalingen(string $name, array &$data) {
-    $mapping = new BetalingenMapping($data):
+    $mapping = new BetalingenMapping($data);
     $value = $mapping->get($name);
 
     switch ($name) {
@@ -217,36 +218,36 @@ class CRM_Bij1migratie_CsvFile {
       case BetalingenMapping::FIELD_MUNTEENHEID:
       case BetalingenMapping::FIELD_KLANT:
       case BetalingenMapping::FIELD_EMAIL:
-        $data[$name] = $data[0];
+        $data[$name] = $value;
         break;
       case BetalingenMapping::FIELD_AANMAAKDATUM:
-        if (!empty($data[1])) {
-          $donatieDatum = new DateTime($data[1]);
+        if (!empty($value)) {
+          $donatieDatum = new DateTime($value);
           $data[$name] = $donatieDatum->format('d-m-Y');
         }
         break;
       case BetalingenMapping::FIELD_BETALINGSDATUM:
-        if (!empty($data[2])) {
-          $betalingsDatum = new DateTime($data[2]);
+        if (!empty($value)) {
+          $betalingsDatum = new DateTime($value);
           $data[$name] = $betalingsDatum->format('d-m-Y');
         }
         break;
       case BetalingenMapping::FIELD_OMSCRHIJVING:
-        if (!empty($data[3])) {
-          $data[$name] = $data[3];
+        if (!empty($value)) {
+          $data[$name] = $value;
         }
         else {
           $data[$name] = "Migratie CiviCRM";
         }
         break;
       case BetalingenMapping::FIELD_BETALINGSMETHODE:
-        if (!empty($data[4])) {
-          $data[$name] = $data[4];
+        if (!empty($value)) {
+          $data[$name] = $value;
         }
         break;
       case BetalingenMapping::FIELD_BETALINGSINSTRUMENT:
-        if (!empty($data[6])) {
-          $data[$name] = Civi::service('bij1Migratie')->haalBetalingsinstrument($data[6]);
+        if (!empty($value)) {
+          $data[$name] = Civi::service('bij1Migratie')->haalBetalingsinstrument($value);
         }
         break;
     }
@@ -261,33 +262,26 @@ class CRM_Bij1migratie_CsvFile {
    * @throws
    */
   private function sanitizeChargebacks(string $name, array &$data) {
+    $mapping = new ChargebacksMapping($data);
+    $value = $mapping->get($name);
+
     switch ($name) {
-      case "chargeback_id":
-        $data[$name] = $data[0];
+      case ChargebacksMapping::FIELD_CHARGEBACK_ID:
+      case ChargebacksMapping::FIELD_TRANSACTIE_ID:
+      case ChargebacksMapping::FIELD_REDEN_CODE:
+      case ChargebacksMapping::FIELD_REDEN_OMSCHRIJVING:
+      case ChargebacksMapping::FIELD_BEDRAG:
+      case ChargebacksMapping::FIELD_MOLLIE_CUSTOMER_ID:
+        $data[$name] = $value;
         break;
-      case "chargeback_datum":
-        if (!empty($data[1])) {
-          $donatieDatum = new DateTime($data[1]);
+      case ChargebacksMapping::FIELD_CHARGEBACK_DATUM:
+        if (!empty($value)) {
+          $donatieDatum = new DateTime($value);
           $data[$name] = $donatieDatum->format('d-m-Y');
         }
         break;
-      case "transactie_id":
-        $data[$name] = $data[2];
-        break;
-      case "reden_code":
-        $data[$name] = $data[3];
-        break;
-      case "reden_omschrijving":
-        $data[$name] = $data[4];
-        break;
-      case "bedrag":
-        $data[$name] = $data[5];
-        break;
-      case "mollie_customer_id":
-        $data[$name] = $data[7];
-        break;
-      case "chargeback_bedrag":
-        $data[$name] = abs($data[6]);
+      case ChargebacksMapping::FIELD_CHARGEBACK_BEDRAG:
+        $data[$name] = abs($value);
         break;
     }
   }
diff --git a/CRM/Bij1migratie/Mapping/ChargebacksMapping.php b/CRM/Bij1migratie/Mapping/ChargebacksMapping.php
new file mode 100644
index 0000000..a44c90e
--- /dev/null
+++ b/CRM/Bij1migratie/Mapping/ChargebacksMapping.php
@@ -0,0 +1,31 @@
+<?php
+
+namespace CRM\Bij1migratie\Mapping;
+
+class ChargebacksMapping extends AbstractMapping
+{
+    public const FIELD_CHARGEBACK_ID = 'chargeback_id';
+    public const FIELD_CHARGEBACK_DATUM = 'chargeback_datum';
+    public const FIELD_TRANSACTIE_ID = 'transactie_id';
+    public const FIELD_REDEN_CODE = 'reden_code';
+    public const FIELD_REDEN_OMSCHRIJVING = 'reden_omschrijving';
+    public const FIELD_BEDRAG = 'bedrag';
+    public const FIELD_CHARGEBACK_BEDRAG = 'chargeback_bedrag';
+    public const FIELD_MOLLIE_CUSTOMER_ID = 'mollie_customer_id';
+
+    private const MAPPING = [
+        self::FIELD_CHARGEBACK_ID => 0,
+        self::FIELD_CHARGEBACK_DATUM => 1,
+        self::FIELD_TRANSACTIE_ID => 2,
+        self::FIELD_REDEN_CODE => 3,
+        self::FIELD_REDEN_OMSCHRIJVING => 4,
+        self::FIELD_BEDRAG => 5,
+        self::FIELD_CHARGEBACK_BEDRAG => 6,
+        self::FIELD_MOLLIE_CUSTOMER_ID => 7,
+    ];
+
+    public function getColumns(): array
+    {
+        return self::MAPPING;
+    }
+}