+function exist_transaction($type, $type_no)
+{
+ $void_entry = get_voided_entry($type, $type_no);
+
+ if ($void_entry != null)
+ return false;
+
+ switch ($type)
+ {
+ case 0 : // it's a journal entry
+ if (!exists_gl_trans($type, $type_no))
+ return false;
+ break;
+
+ case 1 : // it's a payment
+ case 2 : // it's a deposit
+ case 4 : // it's a transfer
+ if (!exists_bank_trans($type, $type_no))
+ return false;
+ break;
+
+ case 10 : // it's a customer invoice
+ case 11 : // it's a customer credit note
+ case 12 : // it's a customer payment
+ case 13 : // it's a customer dispatch
+ if (!exists_customer_trans($type, $type_no))
+ return false;
+ break;
+
+ case systypes::location_transfer() : // it's a stock transfer
+ if (get_stock_transfer_items($type_no) == null)
+ return false;
+ break;
+
+ case systypes::inventory_adjustment() : // it's a stock adjustment
+ if (get_stock_adjustment_items($type_no) == null)
+ return false;
+ break;
+
+ case 25 : // it's a GRN
+ return false;
+ case 20 : // it's a suppler invoice
+ case 21 : // it's a supplier credit note
+ case 22 : // it's a supplier payment
+ if (!exists_supp_trans($type, $type_no))
+ return false;
+ break;
+
+ case systypes::work_order() : // it's a work order
+ if (!get_work_order($type_no, true))
+ return false;
+ break;
+
+ case 28 : // it's a work order issue
+ if (!exists_work_order_issue($type_no))
+ return false;
+ break;
+
+ case 29 : // it's a work order production
+ if (!exists_work_order_produce($type_no))
+ return false;
+ break;
+
+ case systypes::cost_update() : // it's a stock cost update
+ return false;
+ break;
+ }
+
+ return true;
+}