73         List<String> mandatoryInLdap = Arrays.asList(
"username", 
"username-cn", 
"first name", 
"last name");
    74         for (UserStorageProviderModel providerModel : realm.getUserStorageProviders()) {
    75             if (providerModel.getProviderId().equals(LDAPConstants.LDAP_PROVIDER)) {
    76                 List<ComponentModel> mappers = realm.getComponents(providerModel.getId());
    77                 for (ComponentModel mapper : mappers) {
    78                     if (mandatoryInLdap.contains(mapper.getName())) {
    79                         mapper = 
new ComponentModel(mapper);  
    80                         mapper.getConfig().putSingle(
"is.mandatory.in.ldap", 
"true");
    81                         realm.updateComponent(mapper);