Erro occured while creating ztable

Hi gurus,
I created one ztable . while I am activating this table .it is showing below mentioned warning
I don't know how to solve this please any boy knows give me the answer
   TABL ZKMATL_PLANNING activated
  Check table ZKMATL_PLANNING (SACHINS/29.08.07/14:01)
  Enhancement category for table missing
  Enhancement category for include or subtype missing
  Table ZKMATL_PLANNING was checked with warnings
Regards,
Shashikumar.G

Hi Shashi,
Lets consider a case where you define your custom table as maintainence not possible, then this table cannot be modified any body. In such cases the enhancement category plays a vital role. You can maintain the enhancement category by GO->MAINTAIN ENHANCEMENT CATEGORY in tcode se11 and define your settings.
Generally, they are defined as no enhancement category.
Hope this serves purpose.

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    Exception Description: Error compiling the query [select object(o) from Empdata as o]. Unknown abstract schema type [Empdata].
    The Query is a very basic query.
         private EntityManagerFactory emf = javax.persistence.Persistence.createEntityManagerFactory("PersistPU");
         public EntityManager getEntityManager() {
              return emf.createEntityManager();
         private List<Empdata> findEmpdataEntities(boolean all, int maxResults, int firstResult) {
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    Where do I need to look or what do I need to do to determine the error?

    After reading similar discussion in the OTN Discussion page ( [Thread: Unknown abstract schema type |http://forums.oracle.com/forums/thread.jspa?threadID=602826] ) I reviewed how I was creating my EntityManagerFactory. I realize also more information is required for a more complete understanding of the circumstances.
    I originally created a project in Netbeans using the wizard to create a JSF Project from Entity Classes. Through trial and error I produced from the resulting JSF Web pages a maintenance project for a given table in the database. I was then given the task to split the table and build a new project utilizing the existing entity classes in a production project.
    After the table was split and the new entity classes created I then entered the task of starting a new project using the entity classes in the production project. To do this I used the Netbeans wizard to create the JpaControllers in the production project. I copied as much code as I could from the working table maintenance project I had just completed. I have now started to connect the two projects. I have included the production project with the entities as a library project. I created the persistence.xml file in the new project with the same persistence unit name as the production project. I have included the Toplink Extensions as a library in the new project (even though the production project has the entity classes). From what I have been able to glean I am thinking my EntityManagerFactory declaration may be misdirecting the finding of the Empdata schema in my new project. Here is how I declared my EntityManager in the example given:
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         private EntityManagerFactory emf = null;
         public EntityManager getEntityManager() {
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    Hopefully this will better help someone to direct me to determining the cause of my error or the error of my ways.
    NullPointerException stacktrace just mentioned:
    EmpdataController: getEmployeesByEmpno [0]
    AbortProcessingException thrown when processing event of type 'javax.faces.event.ValueChangeEvent' during phase 'PROCESS_VALIDATIONS 3' for component with ID or Client ID of 'srchEmp'
    javax.faces.event.AbortProcessingException: java.lang.NullPointerException
    javax.faces.event.AbortProcessingException: java.lang.NullPointerException
    at javax.faces.event.MethodExpressionValueChangeListener.processValueChange(MethodExpressionValueChangeListener.java:82)
    at javax.faces.event.ValueChangeEvent.processListener(ValueChangeEvent.java:123)
    at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:746)
    at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:416)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.sun.faces.extensions.avatar.components.PartialTraversalViewRootHelper.broadcastEvents(PartialTraversalViewRootHelper.java:500)
    at com.sun.faces.extensions.avatar.components.PartialTraversalViewRootHelper.processValidators(PartialTraversalViewRootHelper.java:267)
    at com.sun.faces.extensions.avatar.components.PartialTraversalViewRootImpl.processValidators(PartialTraversalViewRootImpl.java:152)
    at com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:100)
    at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
    at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
    at com.sun.faces.extensions.avatar.lifecycle.PartialTraversalLifecycle.execute(PartialTraversalLifecycle.java:94)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:244)
    Caused by: java.lang.NullPointerException
    at com.company.web.jpa.controllers.EmpdataJpaController.getEntityManager(EmpdataJpaController.java:71)
    at com.company.web.jpa.controllers.EmpdataJpaController.findEmpdataEntities(EmpdataJpaController.java:163)
    at com.company.web.jpa.controllers.EmpdataJpaController.findEmpdataEntities(EmpdataJpaController.java:155)
    at com.company.web.jpa.controllers.EmpdataJpaController.findEmpdataEmpnoEntities(EmpdataJpaController.java:214)
    at com.company.web.jsf.EmpdataController.getEmployeesByEmpno(EmpdataController.java:471)
    at com.company.web.jsf.EmpdataController.addEmployeeEmpnos(EmpdataController.java:439)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    ... 49 more
    Would someone please help me know where to look next or point me in the direction to find the cause of the error(s)?
    Thank you.

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