Update

src/BackOffice.BFF.Application/PackageCQ/Queries/GetPackage/GetPackageQueryValidator.cs

@@ -0,0 +1,16 @@
+namespace BackOffice.BFF.Application.PackageCQ.Queries.GetPackage;
+public class GetPackageQueryValidator : AbstractValidator<GetPackageQuery>
+{
+    public GetPackageQueryValidator()
+    {
+        RuleFor(model => model.Id)
+            .NotNull();
+    }
+    public Func<object, string, Task<IEnumerable<string>>> ValidateValue => async (model, propertyName) =>
+    {
+        var result = await ValidateAsync(ValidationContext<GetPackageQuery>.CreateWithOptions((GetPackageQuery)model, x => x.IncludeProperties(propertyName)));
+        if (result.IsValid)
+            return Array.Empty<string>();
+        return result.Errors.Select(e => e.ErrorMessage);
+    };
+}