Add BasePaymentProvider.refund_matching_id

doc/development/api/payment.rst

@@ -132,6 +132,8 @@ The provider class
 
    .. automethod:: matching_id
 
+   .. automethod:: refund_matching_id
+
    .. automethod:: shred_payment_info
 
    .. automethod:: cancel_payment

src/pretix/base/payment.py

@@ -957,6 +957,16 @@ class BasePaymentProvider:
         """
         return None
 
+    def refund_matching_id(self, refund: OrderRefund):
+        """
+        Will be called to get an ID for matching this refund when comparing pretix records with records of an external
+        source. This should return the main transaction ID for your API.
+
+        :param refund: The refund in question.
+        :return: A string or None
+        """
+        return None
+
 
 class PaymentException(Exception):
     pass

src/pretix/plugins/stripe/payment.py

@@ -557,6 +557,9 @@ class StripeMethod(BasePaymentProvider):
     def matching_id(self, payment: OrderPayment):
         return payment.info_data.get("id", None)
 
+    def refund_matching_id(self, refund: OrderRefund):
+        return refund.info_data.get('id', None)
+
     def api_payment_details(self, payment: OrderPayment):
         return {
             "id": payment.info_data.get("id", None),