title: SAP .NET Connector, Connect to a Single RFC destination using multiple SAP user accounts
body: <p>I have a .Net application which use to create SAP sales orders through it. When I used a (common)single SAP user account to create the <strong>rfcDestination</strong> it works perfectly with multiple users.
  But when I use user accounts of the logged in user it gives following exception.</p>
  
  <pre><code>RfcInvalidStateException:Portal.Infrastructure.Data.BoundedContext.ScreenPop.SAP.Provider.SapException: destination MAQ is invalid ---&gt; SAP.Middleware.Connector.RfcInvalidStateException: destination MAQ is invalid
     at SAP.Middleware.Connector.RfcFunction.Invoke(RfcDestination destination)
     at Portal.Infrastructure.Data.BoundedContext.ScreenPop.SAP.Provider.SapConectionProvider.Invoke[T](IDataRequet request, String username, String password, IRfcFunction&amp; rfcFunction)
     --- End of inner exception stack trace ---
     at Portal.Infrastructure.Data.BoundedContext.ScreenPop.SAP.Provider.SapConectionProvider.Invoke[T](IDataRequet request, String username, String password, IRfcFunction&amp; rfcFunction)
     at Portal.Infrastructure.Data.BoundedContext.ScreenPop.SAP.SapDataRepository2.Invoke[T](IDataRequet request, String user, String password)
  08:20:52.016 [23] ERROR General - ATP Check Exception:Portal.Infrastructure.Data.BoundedContext.ScreenPop.SAP.Provider.SapException: destination MAQ is invalid ---&gt; SAP.Middleware.Connector.RfcInvalidStateException: destination MAQ is invalid
     at SAP.Middleware.Connector.RfcFunction.Invoke(RfcDestination destination)
     at Portal.Infrastructure.Data.BoundedContext.ScreenPop.SAP.Provider.SapConectionProvider.Invoke[T](IDataRequet request, String username, String password, IRfcFunction&amp; rfcFunction)
     --- End of inner exception stack trace ---
     at Portal.Infrastructure.Data.BoundedContext.ScreenPop.SAP.Provider.SapConectionProvider.Invoke[T](IDataRequet request, String username, String password, IRfcFunction&amp; rfcFunction)
     at Portal.Infrastructure.Data.BoundedContext.ScreenPop.SAP.SapDataRepository2.Invoke[T](IDataRequet request, String user, String password)
  </code></pre>
  
  <p>And this only happened when multiple users calling a rfc at the same time.</p>
  
  <p>Does SAP .Net connector supports for multiple SAP user accounts??</p>