title: How to rename an OIM account using Java API?
body: <p>Trying this code</p>
  
  <pre><code>Account a = findAccountIdByUID(uid);    
  ProvisioningService provService = oimClient.getService(oracle.iam.provisioning.api.ProvisioningService.class);
  a = provService.getAccountDetails(Long.valueOf(a.getAccountID()));
  System.out.println(a.getAccountData().getData().get("UD_ZZZZ_USR_LOGIN"));
  a.getAccountData().getData().put("UD_ZZZZ_USR_LOGIN", "hohoho"); &lt;&lt;&lt;&lt;&lt; error
  provService.modify(a);
  </code></pre>
  
  <p>It shows the right value but when I try to change the login value, I get the exception</p>
  
  <pre><code>Exception in thread "main" oracle.iam.provisioning.exception.GenericProvisioningException: An error occurred in oracle.iam.provisioning.spi.DOBProvisioningMechanism/modify while modifying  account with account id 113 for user XELSYSADM and the cause of error is java.lang.NullPointerException.
  
      at weblogic.rjvm.ResponseImpl.unmarshalReturn(ResponseImpl.java:237)
  
      at weblogic.rmi.cluster.ClusterableRemoteRef.invoke(ClusterableRemoteRef.java:348)
  
      at weblogic.rmi.cluster.ClusterableRemoteRef.invoke(ClusterableRemoteRef.java:259)
  
      at oracle.iam.provisioning.api.ProvisioningService_p7m7x_ProvisioningServiceRemoteImpl_1036_WLStub.modifyx(Unknown Source)
  
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:76)
  
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  
      at java.lang.reflect.Method.invoke(Method.java:602)
  
      at weblogic.ejb.container.internal.RemoteBusinessIntfProxy.invoke(RemoteBusinessIntfProxy.java:85)
  
      at com.sun.proxy.$Proxy2.modifyx(Unknown Source)
  
      at oracle.iam.provisioning.api.ProvisioningServiceDelegate.modify(Unknown Source)
  
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:76)
  
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  
      at java.lang.reflect.Method.invoke(Method.java:602)
  
      at Thor.API.Base.SecurityInvocationHandler$1.run(SecurityInvocationHandler.java:68)
  
      at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
  
      at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
  
      at weblogic.security.Security.runAs(Security.java:41)
  
      at Thor.API.Security.LoginHandler.weblogicLoginSession.runAs(weblogicLoginSession.java:52)
  
      at Thor.API.Base.SecurityInvocationHandler.invoke(SecurityInvocationHandler.java:79)
  
      at com.sun.proxy.$Proxy3.modify(Unknown Source)
  
      at com.ericsson.neas.oimclient.NEASOIMClient.renameAccount(NEASOIMClient.java:354)
  
      at NEASOIMClientTest.main(NEASOIMClientTest.java:41)
  
  Caused by: oracle.iam.provisioning.exception.GenericProvisioningException: An error occurred in oracle.iam.provisioning.spi.DOBProvisioningMechanism/modify while modifying  account with account id 113 for user XELSYSADM and the cause of error is java.lang.NullPointerException.
  
      at oracle.iam.provisioning.util.ProvisioningUtil.throwGenericProvisioningException(ProvisioningUtil.java:234)
  
      at oracle.iam.provisioning.spi.DOBProvisioningMechanism.modify(DOBProvisioningMechanism.java:319)
  
      at oracle.iam.provisioning.impl.ProvisioningServiceImpl$3.processWithoutResult(ProvisioningServiceImpl.java:528)
  
      at oracle.iam.platform.tx.OIMTransactionCallbackWithoutResult.process(OIMTransactionCallbackWithoutResult.java:9)
  
      at oracle.iam.platform.tx.OIMTransactionCallback.doInTransaction(OIMTransactionCallback.java:13)
  
      at oracle.iam.platform.tx.OIMTransactionCallback.doInTransaction(OIMTransactionCallback.java:6)
  
      at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:128)
  
      at oracle.iam.platform.tx.OIMTransactionManager.oimExecute(OIMTransactionManager.java:46)
  
      at oracle.iam.provisioning.impl.ProvisioningServiceImpl.modify(ProvisioningServiceImpl.java:510)
  
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
  
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  
      at java.lang.reflect.Method.invoke(Method.java:606)
  
      at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
  
      at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
  
      at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
  
      at oracle.iam.platform.utils.DMSMethodInterceptor.invoke(DMSMethodInterceptor.java:25)
  
      at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
  
      at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
  
      at com.sun.proxy.$Proxy506.modify(Unknown Source)
  
      at oracle.iam.provisioning.api.ProvisioningServiceEJB.modifyx(Unknown Source)
  
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
  
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  
      at java.lang.reflect.Method.invoke(Method.java:606)
  
      at com.bea.core.repackaged.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:310)
  
      at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
  
      at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
  
      at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
  
      at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
  
      at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
  
      at com.oracle.pitchfork.spi.MethodInvocationVisitorImpl.visit(MethodInvocationVisitorImpl.java:34)
  
      at weblogic.ejb.container.injection.EnvironmentInterceptorCallbackImpl.callback(EnvironmentInterceptorCallbackImpl.java:54)
  
      at com.oracle.pitchfork.spi.EnvironmentInterceptor.invoke(EnvironmentInterceptor.java:42)
  
      at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
  
      at com.bea.core.repackaged.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
  
      at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
  
      at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
  
      at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
  
      at com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
  
      at com.bea.core.repackaged.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
  
      at com.sun.proxy.$Proxy505.modifyx(Unknown Source)
  
      at oracle.iam.provisioning.api.ProvisioningService_p7m7x_ProvisioningServiceRemoteImpl.__WL_invoke(Unknown Source)
  
      at weblogic.ejb.container.internal.SessionRemoteMethodInvoker.invoke(SessionRemoteMethodInvoker.java:40)
  
      at oracle.iam.provisioning.api.ProvisioningService_p7m7x_ProvisioningServiceRemoteImpl.modifyx(Unknown Source)
  
      at oracle.iam.provisioning.api.ProvisioningService_p7m7x_ProvisioningServiceRemoteImpl_WLSkel.invoke(Unknown Source)
  
      at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:667)
  
      at weblogic.rmi.cluster.ClusterableServerRef.invoke(ClusterableServerRef.java:230)
  
      at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:522)
  
      at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363)
  
      at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:146)
  
      at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:518)
  
      at weblogic.rmi.internal.wls.WLSExecuteRequest.run(WLSExecuteRequest.java:118)
  
      at weblogic.work.ExecuteThread.execute(ExecuteThread.java:256)
  
      at weblogic.work.ExecuteThread.run(ExecuteThread.java:221)
  </code></pre>
  
  <p>how do I fix this?</p>