title: org.eclipse.persistence.exceptions.DescriptorException with java.lang.NoSuchField exception
body: <p>I have an Entity named TrainingMstr. I have removed some fields from the table and updated the entity too. But I'm still getting the following error:</p>
  
  <pre><code>Error occurred during deployment: Exception while preparing the app : Exception [EclipseLink-0] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.IntegrityException
  Descriptor Exceptions: 
  ---------------------------------------------------------
  Exception [EclipseLink-59] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DescriptorException
  Exception Description: The instance variable [trngRevNo] is not defined in the domain class [com.discusit.trims.entity.TrainingMstr], or it is not accessible.
  Internal Exception: java.lang.NoSuchFieldException: trngRevNo
  Mapping: org.eclipse.persistence.mappings.DirectToFieldMapping[trngRevNo--&gt;trimsdev.trimsdev.training_mstr.trng_rev_no]
  Descriptor: RelationalDescriptor(com.discusit.trims.entity.TrainingMstr --&gt; [DatabaseTable(trimsdev.trimsdev.training_mstr)])
  Exception [EclipseLink-59] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DescriptorException
  Exception Description: The instance variable [trngRefDocNo] is not defined in the domain class [com.discusit.trims.entity.TrainingMstr], or it is not accessible.
  Internal Exception: java.lang.NoSuchFieldException: trngRefDocNo
  Mapping: org.eclipse.persistence.mappings.DirectToFieldMapping[trngRefDocNo--&gt;trimsdev.trimsdev.training_mstr.trng_ref_doc_no]
  Descriptor: RelationalDescriptor(com.discusit.trims.entity.TrainingMstr --&gt; [DatabaseTable(trimsdev.trimsdev.training_mstr)])
  Exception [EclipseLink-59] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DescriptorException
  Exception Description: The instance variable [trngAddLinks] is not defined in the domain class [com.discusit.trims.entity.TrainingMstr], or it is not accessible.
  Internal Exception: java.lang.NoSuchFieldException: trngAddLinks
  Mapping: org.eclipse.persistence.mappings.DirectToFieldMapping[trngAddLinks--&gt;trimsdev.trimsdev.training_mstr.trng_add_links]
  Descriptor: RelationalDescriptor(com.discusit.trims.entity.TrainingMstr --&gt; [DatabaseTable(trimsdev.trimsdev.training_mstr)])
  Exception [EclipseLink-59] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DescriptorException
  Exception Description: The instance variable [trngNxtRevDt] is not defined in the domain class [com.discusit.trims.entity.TrainingMstr], or it is not accessible.
  Internal Exception: java.lang.NoSuchFieldException: trngNxtRevDt
  Mapping: org.eclipse.persistence.mappings.DirectToFieldMapping[trngNxtRevDt--&gt;trimsdev.trimsdev.training_mstr.trng_nxt_rev_dt]
  Descriptor: RelationalDescriptor(com.discusit.trims.entity.TrainingMstr --&gt; [DatabaseTable(trimsdev.trimsdev.training_mstr)])
  Exception [EclipseLink-59] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DescriptorException
  Exception Description: The instance variable [trngInfo] is not defined in the domain class [com.discusit.trims.entity.TrainingMstr], or it is not accessible.
  Internal Exception: java.lang.NoSuchFieldException: trngInfo
  Mapping: org.eclipse.persistence.mappings.DirectToFieldMapping[trngInfo--&gt;trimsdev.trimsdev.training_mstr.trng_info]
  Descriptor: RelationalDescriptor(com.discusit.trims.entity.TrainingMstr --&gt; [DatabaseTable(trimsdev.trimsdev.training_mstr)])
  Exception [EclipseLink-59] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DescriptorException
  Exception Description: The instance variable [trngEffctvDt] is not defined in the domain class [com.discusit.trims.entity.TrainingMstr], or it is not accessible.
  Internal Exception: java.lang.NoSuchFieldException: trngEffctvDt
  Mapping: org.eclipse.persistence.mappings.DirectToFieldMapping[trngEffctvDt--&gt;trimsdev.trimsdev.training_mstr.trng_effctv_dt]
  Descriptor: RelationalDescriptor(com.discusit.trims.entity.TrainingMstr --&gt; [DatabaseTable(trimsdev.trimsdev.training_mstr)])
  Exception [EclipseLink-59] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DescriptorException
  Exception Description: The instance variable [trngValidTill] is not defined in the domain class [com.discusit.trims.entity.TrainingMstr], or it is not accessible.
  Internal Exception: java.lang.NoSuchFieldException: trngValidTill
  Mapping: org.eclipse.persistence.mappings.DirectToFieldMapping[trngValidTill--&gt;trimsdev.trimsdev.training_mstr.trng_valid_till]
  Descriptor: RelationalDescriptor(com.discusit.trims.entity.TrainingMstr --&gt; [DatabaseTable(trimsdev.trimsdev.training_mstr)])
  </code></pre>
  
  <p>I have removed all the related data fields from all the SessionBeans too.</p>
  
  <p>What should I do for this?</p>