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Message: <blockquote data-quote="rock pora" data-source="post: 18857319" data-attributes="member: 357037">menna error ekaSystem.Data.Entity.Infrastructure.DbUpdateException:  An error occurred while updating the entries. See the inner exception  for details. ---> System.Data.Entity.Core.UpdateException: An error  occurred while updating the entries. See the inner exception for  details. ---> System.InvalidOperationException: A dependent property  in a ReferentialConstraint is mapped to a store-generated column.  Column: 'SoNo'.    at  System.Data.Entity.Core.Mapping.Update.Internal.UpdateCompiler.BuildSetClauses(DbExpressionBinding  target, PropagatorResult row, PropagatorResult originalRow,  TableChangeProcessor processor, Boolean insertMode, Dictionary`2&  outputIdentifiers, DbExpression& returning, Boolean&  rowMustBeTouched)    at  System.Data.Entity.Core.Mapping.Update.Internal.UpdateCompiler.BuildInsertCommand(PropagatorResult  newRow, TableChangeProcessor processor)    at  System.Data.Entity.Core.Mapping.Update.Internal.TableChangeProcessor.CompileCommands(ChangeNode  changeNode, UpdateCompiler compiler)    --- End of inner exception stack trace ---    at  System.Data.Entity.Core.Mapping.Update.Internal.TableChangeProcessor.CompileCommands(ChangeNode  changeNode, UpdateCompiler compiler)    at System.Data.Entity.Core.Mapping.Update.Internal.UpdateTranslator.d__a.MoveNext()    at System.Linq.Enumerable.d__71`1.MoveNext()    at  System.Data.Entity.Core.Mapping.Update.Internal.UpdateCommandOrderer..ctor(IEnumerable`1  commands, UpdateTranslator translator)    at  System.Data.Entity.Core.Mapping.Update.Internal.UpdateTranslator.ProduceCommands()     at  System.Data.Entity.Core.Mapping.Update.Internal.UpdateTranslator.Update()     at System.Data.Entity.Core.EntityClient.Internal.EntityAdapter.b__2(UpdateTranslator ut)    at System.Data.Entity.Core.EntityClient.Internal.EntityAdapter.Update[T](T noChangesResult, Func`2 updateFunction)    at System.Data.Entity.Core.EntityClient.Internal.EntityAdapter.Update()    at System.Data.Entity.Core.Objects.ObjectContext.b__35()     at  System.Data.Entity.Core.Objects.ObjectContext.ExecuteInTransaction[T](Func`1  func, IDbExecutionStrategy executionStrategy, Boolean  startLocalTransaction, Boolean releaseConnectionOnSuccess)    at  System.Data.Entity.Core.Objects.ObjectContext.SaveChangesToStore(SaveOptions  options, IDbExecutionStrategy executionStrategy, Boolean  startLocalTransaction)    at  System.Data.Entity.Core.Objects.ObjectContext.<>c__DisplayClass2a.b__27()     at  System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult](Func`1  operation)    at  System.Data.Entity.Core.Objects.ObjectContext.SaveChangesInternal(SaveOptions  options, Boolean executeInExistingTransaction)    at  System.Data.Entity.Core.Objects.ObjectContext.SaveChanges(SaveOptions  options)    at System.Data.Entity.Internal.InternalContext.SaveChanges()    --- End of inner exception stack trace ---    at System.Data.Entity.Internal.InternalContext.SaveChanges()    at System.Data.Entity.Internal.LazyInternalContext.SaveChanges()    at System.Data.Entity.DbContext.SaveChanges()    at SODModel.InsertSOD(SOD sOD) in  c:\Users\Administrator\Documents\Visual Studio  2013\WebSites\BookShop\App_Code\Models\SODModel.cs:line 17</blockquote>

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