diff -r 1bca30b14933 modules/org.openbravo.advpaymentmngt/src/org/openbravo/advpaymentmngt/actionHandler/AddMultiplePaymentsHandler.java
--- a/modules/org.openbravo.advpaymentmngt/src/org/openbravo/advpaymentmngt/actionHandler/AddMultiplePaymentsHandler.java	Thu Jun 09 18:51:29 2016 +0200
+++ b/modules/org.openbravo.advpaymentmngt/src/org/openbravo/advpaymentmngt/actionHandler/AddMultiplePaymentsHandler.java	Mon Jun 27 10:57:04 2016 +0200
@@ -103,6 +103,7 @@
         transaction.setTransactionDate(transactionDate);
         transaction.setDateAcct(acctDate);
         transaction.setAccount(account);
+        transaction.setLineNo(TransactionsDao.getTransactionMaxLineNo(account) + 10);
         FIN_TransactionProcess.doTransactionProcess(ACTION_PROCESS_TRANSACTION, transaction);
       }
     } finally {