diff --git a/app/Classes/Modules/Imports/ControllersLogic/ImportExcelLogic.php b/app/Classes/Modules/Imports/ControllersLogic/ImportExcelLogic.php
index 1e16c542..a199f75d 100644
--- a/app/Classes/Modules/Imports/ControllersLogic/ImportExcelLogic.php
+++ b/app/Classes/Modules/Imports/ControllersLogic/ImportExcelLogic.php
@@ -74,12 +74,21 @@ class ImportExcelLogic extends AbstractControllerLogic
                 'businessactivitydesc', 'debtorcode', 'tradename', 'address', 'postcode',
                 'phone', 'emailaddress', 'city', 'countrycode', 'statecode'
             ];
-            if (
-                ($reportType === 'Sales Invoice Report' && $normalizedHeader !== $salesInvoiceHeader) ||
-                ($reportType === 'Customers Report' && $normalizedHeader !== $customersReportHeader)
-            ) {
+
+            if ($reportType === 'Sales Invoice Report') {
+                $optionalColumn = 'einvoicevalidationlink';
+
+                if (
+                    $normalizedHeader !== $salesInvoiceHeader &&
+                    $normalizedHeader !== [...$salesInvoiceHeader, $optionalColumn]
+                ) {
+                    throw new MalformedRequestException('Uploaded Excel file format is incorrect. Column headers do not match expected format.');
+                }
+
+            } elseif ($reportType === 'Customers Report' && $normalizedHeader !== $customersReportHeader) {
                 throw new MalformedRequestException('Uploaded Excel file format is incorrect. Column headers do not match expected format.');
             }
+
             $rows = $sheet->skip(1);
 
             foreach ($rows as $index => $details) {