More than one form was opened at once for the lookup control In D365Fo.

I have added a new field in standard form and I have written lookup code by using event handler. When I click on that control I am getting " More than one form was opened at once for the lookup control" this error. To resolve this we wan use below code.

[FormControlEventHandler(formControlStr(SalesTable, InventLoaction), FormControlEventType::Lookup)] public static void InventLoaction_OnLookup(FormControl sender, FormControlEventArgs e) {

FormControlCancelableSuperEventArgs     eventArg = e as FormControlCancelableSuperEventArgs;

eventArg.CancelSuperCall();

}

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