diff --git a/server/integration_tests/abacus_sftp/test_abacus_sftp.py b/server/integration_tests/abacus_sftp/test_abacus_sftp.py
index 77178ef0..1a173b5f 100644
--- a/server/integration_tests/abacus_sftp/test_abacus_sftp.py
+++ b/server/integration_tests/abacus_sftp/test_abacus_sftp.py
@@ -171,11 +171,6 @@ def test_upload_abacus_xml(setup_abacus_env):
         order_filepath = os.path.join(
             tmppath, "order/myVBV_orde_20240215083312_60000012_6000000124.xml"
         )
-        assert os.path.exists(order_filepath)
-        with open(order_filepath) as order_file:
-            order_content = order_file.read()
-            assert (
-                "<ReferencePurchaseOrder>24021508331287484</ReferencePurchaseOrder>"
-                in order_content
-            )
-            assert "<CustomerNumber>60000012</CustomerNumber>" in order_content
+
+        # it should not upload the order file again
+        assert not os.path.exists(order_filepath)
diff --git a/server/vbv_lernwelt/shop/invoice/abacus.py b/server/vbv_lernwelt/shop/invoice/abacus.py
index 6aaed41e..a60b0dd2 100644
--- a/server/vbv_lernwelt/shop/invoice/abacus.py
+++ b/server/vbv_lernwelt/shop/invoice/abacus.py
@@ -52,9 +52,11 @@ def abacus_ssh_upload(checkout_information: CheckoutInformation):
             abacus_ssh_upload_invoice(
                 customer_xml_filename, customer_xml_content, folder="debitor"
             )
-            abacus_ssh_upload_invoice(
-                invoice_xml_filename, invoice_xml_content, folder="order"
-            )
+
+            if not checkout_information.abacus_ssh_upload_done:
+                abacus_ssh_upload_invoice(
+                    invoice_xml_filename, invoice_xml_content, folder="order"
+                )
 
             checkout_information.abacus_ssh_upload_done = True
             checkout_information.invoice_transmitted_at = timezone.now()