// setting the http url file qualifier which is necessary to communicate with the server.
message.setHttpUrlFileQualifier(this.remoteNodeConfiguration.getHttpUrlFileQualifier());
SCMPSrvChangeSubscriptionCall changeSubscriptionCall = new SCMPSrvChangeSubscriptionCall(this.requester, message);
try {
changeSubscriptionCall.invoke(callback, timeoutMillis);
} catch (ConnectionPoolBusyException ex) {
throw ex;
} catch (Exception e) {
// changeSubscription failed
callback.receive(e);