diff --git a/app/Factory/TransactionJournalFactory.php b/app/Factory/TransactionJournalFactory.php
index 0292bdb9ad..f8389f7c2f 100644
--- a/app/Factory/TransactionJournalFactory.php
+++ b/app/Factory/TransactionJournalFactory.php
@@ -275,6 +275,9 @@ class TransactionJournalFactory
 
             return null;
         }
+
+        // TODO typeOverrule: the account validator may have another opinion on the transaction type.
+
         /** create or get source and destination accounts  */
         $sourceInfo = [
             'id'     => (int) $row['source_id'],