diff --git a/Home.md b/Home.md
index 1c50ccb..267d187 100644
--- a/Home.md
+++ b/Home.md
@@ -30,7 +30,7 @@ Position | Meaning
 ---------|--------
 0 | Format header (`QSv1`)
 1 | Subtype header (`a`)
-2 | Sender/payer account number. Preface with a implementation-specific code followed by a colon in case multiple implementations generate conflicting account numbers.
+2 | Sender/payer account number. See appendix for specification.
 3 | To name
 4 | To company/firm/business
 5 | To street