When i open this url <<Purchase/Enterprise%20Portal/default.aspx >> i got the following error:
Object reference not set to an instance of an object.
at Microsoft.Dynamics.AX.Framework.Services.Client.InteractionService.ListPageInteractionObjectExtensions.InitializeViewFieldPropertiesFromListPageField(IAxDataAccessObjectViewFieldMetadata viewField, IFormControlMetadata listPageField)
at Microsoft.Dynamics.AX.Framework.Services.Client.InteractionService.ListPageInteractionObjectExtensions.<GetDisplayedViewFields>d__e.MoveNext()
at System.Linq.Enumerable.WhereEnumerableIterator`1.MoveNext()
at Microsoft.Dynamics.Framework.Portal.UI.WebControls.AxListPageContentArea.InitializeListPageGridColumns()
at Microsoft.Dynamics.Framework.Portal.UI.WebControls.AxListPageContentArea.InitializeListPageContentArea()
at Microsoft.Dynamics.Framework.Portal.UI.WebControls.AxListPageContentArea.OnLoad(EventArgs e)
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Control.LoadRecursive()
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)