X-Git-Url: https://delta.frontaccounting.com/gitweb/?a=blobdiff_plain;f=purchasing%2Fpo_entry_items.php;h=a23b7a0754b94603dc9e8e1d22931b4d6df3f337;hb=207ae289c358ff57c1adc55304a65b17a5dc4132;hp=8cd68c21433f4662593ec8be87ed917204f7a86f;hpb=32a722c30dea40c8644fdd035579779fb931c85b;p=fa-stable.git

diff --git a/purchasing/po_entry_items.php b/purchasing/po_entry_items.php
index 8cd68c21..a23b7a07 100644
--- a/purchasing/po_entry_items.php
+++ b/purchasing/po_entry_items.php
@@ -372,6 +372,13 @@ function can_commit()
 		set_focus('supp_ref');
 		return false;
 	}
+	if ($_SESSION['PO']->trans_type==ST_SUPPINVOICE 
+		&& is_reference_already_there($_SESSION['PO']->supplier_id, get_post('supp_ref'), $_SESSION['PO']->order_no))
+	{
+		display_error(_("This invoice number has already been entered. It cannot be entered again.") . " (" . get_post('supp_ref') . ")");
+		set_focus('supp_ref');
+		return false;
+	}
 	if ($_SESSION['PO']->trans_type == ST_PURCHORDER && get_post('delivery_address') == '')
 	{
 		display_error(_("There is no delivery address specified."));