воз здесь у вас ON написано дова раза
должно быть раз
INNER JOIN [Open demand] ON [Stock balance].[Material ID] = [Open demand].[Material ID] ON ([WOs].[Заказ] = [Open demand].WO)
AND ([WOs].[Заказ] = [GI manual].WO) )
здесь так же
) INNER JOIN [GI RV register] ON [Open demand].[Reservation ID] = [GI RV register].[Reservation ID] ON [Stock balance].[Material ID] = [Open demand].[Material ID] ON [WOs].[Заказ] = [Open demand].[WO] );))
