public ActionResult Create(int?id)
        {
            var organisationId = UserOrganisationId;
            var centreId       = UserCentreId;

            id = id ?? 0;
            var enquiry             = _nidanBusinessService.RetrieveEnquiry(organisationId, id.Value, e => true);
            var paymentModes        = _nidanBusinessService.RetrievePaymentModes(organisationId, e => true);
            var interestedCourseIds = enquiry.EnquiryCourses.Select(e => e.CourseId).ToList();
            var courses             = _nidanBusinessService.RetrieveCourses(organisationId, p => true).Where(e => interestedCourseIds.Contains(e.CourseId));
            var batchTimePrefers    = _nidanBusinessService.RetrieveBatchTimePrefers(organisationId, e => true);
            var courseInstallments  = _nidanBusinessService.RetrieveCentreCourseInstallments(organisationId, centreId).Items.Select(e => e.CourseInstallment).ToList();
            var counsellingData     = _nidanBusinessService.RetrieveCounsellings(organisationId, e => e.EnquiryId == enquiry.EnquiryId).Items.FirstOrDefault();
            var counsellingCourse   = _nidanBusinessService.RetrieveCourses(organisationId, e => true).Where(e => e.CourseId == counsellingData?.CourseOfferedId);
            var viewModel           = new RegistrationViewModel
            {
                PaymentModes       = new SelectList(paymentModes, "PaymentModeId", "Name"),
                Courses            = new SelectList(courses, "CourseId", "Name"),
                BatchTimePrefers   = new SelectList(batchTimePrefers, "BatchTimePreferId", "Name"),
                Enquiry            = enquiry,
                StudentCode        = enquiry.StudentCode,
                EnquiryId          = enquiry.EnquiryId,
                CourseInstallments = new SelectList(courseInstallments, "CourseInstallmentId", "Name"),
                CounsellingCourse  = new SelectList(counsellingCourse, "CourseId", "Name")
            };

            return(View(viewModel));
        }