diff --git a/apps/web-client-tpos-net/src/WebClientTpos.Client/Services/PosDataService.cs b/apps/web-client-tpos-net/src/WebClientTpos.Client/Services/PosDataService.cs
index 14ddb587..ea3c3f05 100644
--- a/apps/web-client-tpos-net/src/WebClientTpos.Client/Services/PosDataService.cs
+++ b/apps/web-client-tpos-net/src/WebClientTpos.Client/Services/PosDataService.cs
@@ -1,31 +1,39 @@
 using System.Net.Http.Json;
+using System.Text.Json;
+using System.Text.Json.Serialization;
 
 namespace WebClientTpos.Client.Services;
 
 public class PosDataService
 {
     private readonly HttpClient _http;
+    private static readonly JsonSerializerOptions _jsonOptions = new()
+    {
+        PropertyNameCaseInsensitive = true,
+        PropertyNamingPolicy = JsonNamingPolicy.SnakeCaseLower,
+        DefaultIgnoreCondition = JsonIgnoreCondition.WhenWritingNull
+    };
 
     public PosDataService(HttpClient http) => _http = http;
 
-    public record ShopInfo(Guid Id, string Name, string Slug, string Description, string Phone, string Email, string Category, string Status);
-    public record ProductInfo(Guid Id, string Name, decimal Price, string Sku, string Description, string Category, int? DurationMinutes);
-    public record CategoryInfo(Guid Id, string Name, string Description, int DisplayOrder);
-    public record TableInfo(Guid Id, string TableNumber, int Capacity, string Zone, string Status, Guid? SessionId, int? GuestCount, DateTime? StartedAt);
-    public record AppointmentInfo(Guid Id, Guid? CustomerId, Guid? StaffId, Guid? ResourceId, Guid ServiceId, DateTime StartTime, DateTime EndTime, string Status, string ResourceName);
+    public record ShopInfo(Guid Id, string Name, string Slug, string? Description, string? Phone, string? Email, string? Category, string? Status);
+    public record ProductInfo(Guid Id, string Name, decimal Price, string? Sku, string? Description, string? Category, int? DurationMinutes);
+    public record CategoryInfo(Guid Id, string Name, string? Description, int DisplayOrder);
+    public record TableInfo(Guid Id, string TableNumber, int Capacity, string? Zone, string Status, Guid? SessionId, int? GuestCount, DateTime? StartedAt);
+    public record AppointmentInfo(Guid Id, Guid? CustomerId, Guid? StaffId, Guid? ResourceId, Guid ServiceId, DateTime StartTime, DateTime EndTime, string Status, string? ResourceName);
 
     public async Task<List<ShopInfo>> GetShopsAsync()
-        => await _http.GetFromJsonAsync<List<ShopInfo>>("api/bff/shops") ?? new();
+        => await _http.GetFromJsonAsync<List<ShopInfo>>("api/bff/shops", _jsonOptions) ?? new();
 
     public async Task<List<ProductInfo>> GetProductsAsync(Guid shopId)
-        => await _http.GetFromJsonAsync<List<ProductInfo>>($"api/bff/shops/{shopId}/products") ?? new();
+        => await _http.GetFromJsonAsync<List<ProductInfo>>($"api/bff/shops/{shopId}/products", _jsonOptions) ?? new();
 
     public async Task<List<CategoryInfo>> GetCategoriesAsync(Guid shopId)
-        => await _http.GetFromJsonAsync<List<CategoryInfo>>($"api/bff/shops/{shopId}/categories") ?? new();
+        => await _http.GetFromJsonAsync<List<CategoryInfo>>($"api/bff/shops/{shopId}/categories", _jsonOptions) ?? new();
 
     public async Task<List<TableInfo>> GetTablesAsync(Guid shopId)
-        => await _http.GetFromJsonAsync<List<TableInfo>>($"api/bff/shops/{shopId}/tables") ?? new();
+        => await _http.GetFromJsonAsync<List<TableInfo>>($"api/bff/shops/{shopId}/tables", _jsonOptions) ?? new();
 
     public async Task<List<AppointmentInfo>> GetAppointmentsAsync(Guid shopId)
-        => await _http.GetFromJsonAsync<List<AppointmentInfo>>($"api/bff/shops/{shopId}/appointments") ?? new();
+        => await _http.GetFromJsonAsync<List<AppointmentInfo>>($"api/bff/shops/{shopId}/appointments", _jsonOptions) ?? new();
 }