Not able to add a remaining order amount to a payment group

Question

Hello all,
I've been writing a customized kind of PaymentFormHandler, which extends the PurchaseProcessFormHandler and implements the transaction pattern.
I'm getting an exception which I am currently not able tosolve. The important code section follows, the exception caught as well.
Does anyone have a tip on solving this problem? Any help is appreciated.
(Do not consider the comment and log lines in Portuguese)
// Adicionando o default
                              String nomePaymentGroupDefault = getPaymentGroupMapContainer()
                                        .getDefaultPaymentGroupName();
                              PaymentGroup paymentGroup = getPaymentGroupMapContainer()
                                        .getPaymentGroup(nomePaymentGroupDefault);
                              logDebug("adicionando o restante do valor do order ao "
                                        + nomePaymentGroupDefault + ", id: "
                                        + paymentGroup.getId());
                              try {
                                   getOrderManager()
                                             .addRemainingOrderAmountToPaymentGroup(
                                                       getOrder(), paymentGroup.getId());
                              } catch (CommerceException e) {
                                   tratarExcecoes(e);
CONTAINER:atg.commerce.order.InvalidParameterException: atg.commerce.order.OrderResources->InvalidPaymentGroupIdParameter
: Invalid PaymentGroup id parameter.; SOURCE:atg.commerce.order.PaymentGroupNotFoundException: atg.commerce.order.OrderRes
ources->PaymentGroupNotFound : PaymentGroup with id pg640003 is not in container.
at atg.commerce.order.PaymentGroupManager.getPaymentGroupOrderRelationship(PaymentGroupManager.java:731)
at atg.commerce.order.OrderManager.getPaymentGroupOrderRelationship(OrderManager.java:5021)
at atg.commerce.order.OrderManager.addRemainingOrderAmountToPaymentGroup(OrderManager.java:2066)
at passarela.web.pagamento.PagamentoFormHandler.handleEfetuarPagamento(PagamentoFormHandler.java:201)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at atg.droplet.EventSender.sendEvent(EventSender.java:582)
at atg.droplet.FormTag.doSendEvents(FormTag.java:800)
at atg.droplet.FormTag.sendEvents(FormTag.java:649)
at atg.droplet.DropletEventServlet.sendEvents(DropletEventServlet.java:523)
Thanks a lot.

Answer 1

No, it is in the order. These two lines work correctly:
String nomePaymentGroupDefault = getPaymentGroupMapContainer()
.getDefaultPaymentGroupName();
PaymentGroup paymentGroup = getPaymentGroupMapContainer()
.getPaymentGroup(nomePaymentGroupDefault);
I'm able to retrieve the name of the default paymentGroup and, using the name, get the payment group itself.
The problem is when i call getOrderManager().addRemainingOrderAmountToPaymentGroup(getOrder(), paymentGroup.getId()) which throws the exception above.
The default group has been successfully created by a prior CreateCreditCardFormHandler.
Thanks.