Salve a tutti, sto impazzendo da 2 giorni con un errore in fase di compilazione...Riporto di seguito l'errore nella speraznza di trovare una soluzione..Ciao e grazie

Error 10 The "GenerateResource" task failed unexpectedly.
System.Reflection.TargetInvocationException: Type in the data at line 556, position 5, cannot be loaded because it threw the following exception during construction: The given name 'ID_ParteFina' matches at least two names in the collection object with different cases, but does not match either of them with the same case. ---> System.Xml.XmlException: Type in the data at line 556, position 5, cannot be loaded because it threw the following exception during construction: The given name 'ID_ParteFina' matches at least two names in the collection object with different cases, but does not match either of them with the same case. Line 556, position 5. ---> System.ArgumentException: The given name 'ID_ParteFina' matches at least two names in the collection object with different cases, but does not match either of them with the same case.
at System.Data.DataColumnCollection.get_Item(String name)
at L488.DataModelsUI.DatiSalFinanziamento.dsSALFinanziamentoCards.vDatiSal_Finanziamento_ViewDataTable.InitVars() in C:\Progetti\Nuova488\EEF488\488.DataModelsUI\DatiSalFinanziamento\dsSALFinanziamentoCards.Designer.cs:line 2838
at L488.DataModelsUI.DatiSalFinanziamento.dsSALFinanziamentoCards.InitVars(Boolean initTable) in C:\Progetti\Nuova488\EEF488\488.DataModelsUI\DatiSalFinanziamento\dsSALFinanziamentoCards.Designer.cs:line 317
at L488.DataModelsUI.DatiSalFinanziamento.dsSALFinanziamentoCards.InitVars() in C:\Progetti\Nuova488\EEF488\488.DataModelsUI\DatiSalFinanziamento\dsSALFinanziamentoCards.Designer.cs:line 273
at L488.DataModelsUI.DatiSalFinanziamento.dsSALFinanziamentoCards..ctor(SerializationInfo info, StreamingContext context) in C:\Progetti\Nuova488\EEF488\488.DataModelsUI\DatiSalFinanziamento\dsSALFinanziamentoCards.Designer.cs:line 94
--- End of inner exception stack trace ---
--- End of inner exception stack trace ---
at Microsoft.Build.Shared.ExceptionHandling.RethrowUnlessFileIO(Exception e)
at Microsoft.Build.Tasks.ProcessResourceFiles.ProcessFile(String inFile, String outFile)
at Microsoft.Build.Tasks.ProcessResourceFiles.Run(TaskLoggingHelper log, ITaskItem[] assemblyFilesList, ArrayList inputs, ArrayList outputs, Boolean sourcePath, String language, String namespacename, String filename, String classname, Boolean publicClass)
at Microsoft.Build.Tasks.GenerateResource.Execute()
at Microsoft.Build.BuildEngine.TaskEngine.ExecuteTask(ExecutionMode howToExecuteTask, Hashtable projectItemsAvailableToTask, BuildPropertyGroup projectPropertiesAvailableToTask, Boolean& taskClassWasFound) 488.Client

Infatti...ma il problema è che non ci sono due colonne uguali