ERROR:Cannot connect to Host: [MTW02SDEP02] with user name: [Administrator]

Dear All,

When I try to deploy WD application, it gives me this following error and doesn't deploy.

com.sap.engine.deploy.manager.DeployManagerException: ERROR: Cannot connect to Host: [MTW02SDEP02] with user name: [Administrator] Check your login information. Exception is: com.sap.engine.services.jndi.persistent.exceptions.NamingException: Exception during getInitialContext operation. No server is running. [Root exception is

Caused by: com.sap.engine.services.security.exceptions.BaseLoginException: Exception in creating new RemoteLoginContext instance.

at com.sap.engine.services.security.remote.login.RemoteLoginContextExt.<init>(RemoteLoginContextExt.java:34)

at com.sap.engine.services.jndi.implclient.LoginHelper.clientSideLogin(LoginHelper.java:81)

at com.sap.engine.services.jndi.InitialContextFactoryImpl.getInitialContext(InitialContextFactoryImpl.java:355)

... 38 more

Caused by: com.sap.engine.services.rmi_p4.P4ConnectionException: Possible problem: no available running server node. Check your running servers.

at com.sap.engine.services.rmi_p4.P4ObjectBrokerClientImpl.getException(P4ObjectBrokerClientImpl.java:709)

at com.sap.engine.services.rmi_p4.P4ObjectBrokerClientImpl.getException(P4ObjectBrokerClientImpl.java:697)

at com.sap.engine.services.rmi_p4.Parser.newRequest(Parser.java:180)

at com.sap.engine.services.rmi_p4.Connection.run(Connection.java:427)

... 1 more

(message ID: com.sap.sdm.serverext.servertype.inqmy.extern.EngineApplOnlineDeployerImpl.checkLoginCredentials.DMEXC)

Deployment exception : The deployment of at least one item aborted