public async Task <IActionResult> AddUkprn(AddUkprnToAllowedProvidersListViewModel model)
        {
            if (ModelState.IsValid)
            {
                await _applyApiClient.AddToAllowedProviders(int.Parse(model.Ukprn), model.StartDate.Value, model.EndDate.Value);
            }

            return(RedirectToAction(nameof(Index), new { sortColumn = model.SortColumn, sortOrder = model.SortOrder, startDate = model.StartDate?.ToString("yyyy-MM-dd"), endDate = model.EndDate?.ToString("yyyy-MM-dd") }));
        }