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@EJB private CRMProcessSubscriptionServiceDeactivationBean processSubscriptionServiceDeactivationBean;    
public CRMDOSubscriptionAction deactivateService(CRMDOSubscription subscription,CRMDOInstalledItem installedItem){
    
    ArrayList<CRMDOSubscriptionService> servicesToBeDeactivated = new ArrayList<CRMDOSubscriptionService>();
    
    //create the subscription service deactivation data object
    SubscriptionServiceDeactivation subscriptionServiceDeactivation = processSubscriptionServiceDeactivationBean.constructSubscriptionServiceDeactivation(subscription);
    //the list of theproducts product that will be deactivated from the subscription
    //in this example the product that will be activateddeactivated will be retrieve based on the installed item
    Set<SubscriptionActionProduct> servicesToBeProcessed = new HashSet<SubscriptionActionProduct>();
    
    //retrieve the subscription installed item.
    CRMDOSubscriptionInstalledItem subscriptionInstalledItem = (CRMDOSubscriptionInstalledItem)subscriptionInstalledItemBean.load(subscription, installedItem);
    
    //retrieve the related distributions of the installed item
    ArrayList<CRMDO> installedItemDistributions = subProvisioningDistributionBean.load(subscriptionInstalledItem);
    
    //retrieve all the service distributions 
    ArrayList<CRMDO> serviceDistributions = subProvisioningDistributionBean.loadServiceDistributions(subscription, null);
    
    //retrieve all the subscription services whichdistributed ison distributed tothe same distributor as the installed item
    for (int i=0;i<installedItemDistributions.size();i++)
    {
        CRMDOSubProvisioningDistribution installedItemDistribution = (CRMDOSubProvisioningDistribution)installedItemDistributions.get(i);
        
        for (int j=0;j<serviceDistributions.size();j++)
        {
            CRMDOSubProvisioningDistribution serviceDistribution = (CRMDOSubProvisioningDistribution)serviceDistributions.get(j);
            if (serviceDistribution.getProvDistributor().equals(installedItemDistribution.getProvDistributor()))
            {
                if (!servicesToBeDeactivated.contains(serviceDistribution.getSubService()))
                {
                    servicesToBeDeactivated.add(serviceDistribution.getSubService());
                }
            }
        }
        
    }
    
    for (int i=0;i<servicesToBeDeactivated.size();i++)
    {
        CRMDOSubscriptionService subscriptionService =(CRMDOSubscriptionService)servicesToBeDeactivated.get(i);
        //create a new subscription action product data object where you will define the product that will be processprocessed by the action
        SubscriptionActionProduct subscriptionActionProduct =new SubscriptionActionProduct();
        subscriptionActionProduct.setIsDeleted(new Integer(0));
        subscriptionActionProduct.setProduct(subscriptionService.getProduct());
        subscriptionActionProduct.setSubService(subscriptionService);
        subscriptionActionProduct.setIsSelected(new Integer(1));
            
        servicesToBeProcessed.add(subscriptionActionProduct);
    }
    
    subscriptionServiceDeactivation.setServicesToBeProcessed(servicesToBeProcessed);
    
    //submit the subscription service deactivation data object in order to remove the product from subscription 

   //As a result is the subscription action data object.
    //the subscription action data object is the object which contains all the information about the action you perform on the subscription
    CRMDOSubscriptionAction subscriptionAction = processSubscriptionServiceDeactivationBean.submit(subscriptionServiceDeactivation);
	return subscriptionAction;
}