diff --git a/MagicCarpetProject/MagicCarpetContracts/DataModels/AgencyDataModel.cs b/MagicCarpetProject/MagicCarpetContracts/DataModels/AgencyDataModel.cs
new file mode 100644
index 0000000..ca84381
--- /dev/null
+++ b/MagicCarpetProject/MagicCarpetContracts/DataModels/AgencyDataModel.cs
@@ -0,0 +1,33 @@
+using MagicCarpetContracts.Enums;
+using MagicCarpetContracts.Exceptions;
+using MagicCarpetContracts.Extensions;
+using MagicCarpetContracts.Infrastructure;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MagicCarpetContracts.DataModels;
+
+public class AgencyDataModel(string id, TourType tourType, int count, List<TourAgencyDataModel> tours) : IValidation
+{
+    public string Id { get; private set; } = id;
+    public TourType Type { get; private set; } = tourType;
+    public int Count { get; private set; } = count;
+    public List<TourAgencyDataModel> Tours { get; private set; } = tours;
+
+    public void Validate()
+    {
+        if (Id.IsEmpty())
+            throw new ValidationException("Field Id is empty");
+        if (!Id.IsGuid())
+            throw new ValidationException("The value in the field Id is not a unique identifier");
+        if (Type == TourType.None)
+            throw new ValidationException("Field Type is empty");
+        if (Count <= 0)
+            throw new ValidationException("Field Count is less than or equal to 0");
+        if ((Tours?.Count ?? 0) == 0)
+            throw new ValidationException("The sale must include tours");
+    }
+}
diff --git a/MagicCarpetProject/MagicCarpetContracts/DataModels/SaleTourDataModel.cs b/MagicCarpetProject/MagicCarpetContracts/DataModels/SaleTourDataModel.cs
index 47f68be..58dcfe3 100644
--- a/MagicCarpetProject/MagicCarpetContracts/DataModels/SaleTourDataModel.cs
+++ b/MagicCarpetProject/MagicCarpetContracts/DataModels/SaleTourDataModel.cs
@@ -26,10 +26,10 @@ public class SaleTourDataModel(string saleId, string cocktailId, int count) : IV
             throw new ValidationException("The value in the field SaleId is not a unique identifier");
 
         if (TourId.IsEmpty())
-            throw new ValidationException("Field ProductId is empty");
+            throw new ValidationException("Field TourId is empty");
 
         if (!TourId.IsGuid())
-            throw new ValidationException("The value in the field ProductId is not a unique identifier");
+            throw new ValidationException("The value in the field TourId is not a unique identifier");
 
         if (Count <= 0)
             throw new ValidationException("Field Count is less than or equal to 0");
diff --git a/MagicCarpetProject/MagicCarpetContracts/DataModels/SuppliesDataModel.cs b/MagicCarpetProject/MagicCarpetContracts/DataModels/SuppliesDataModel.cs
new file mode 100644
index 0000000..871e505
--- /dev/null
+++ b/MagicCarpetProject/MagicCarpetContracts/DataModels/SuppliesDataModel.cs
@@ -0,0 +1,35 @@
+using MagicCarpetContracts.Enums;
+using MagicCarpetContracts.Exceptions;
+using MagicCarpetContracts.Extensions;
+using MagicCarpetContracts.Infrastructure;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using static System.Runtime.InteropServices.JavaScript.JSType;
+
+namespace MagicCarpetContracts.DataModels;
+
+public class SuppliesDataModel(string id, TourType tourType, DateTime date, int count, List<TourSuppliesDataModel> tours) : IValidation
+{
+    public string Id { get; private set; } = id;
+    public TourType Type { get; private set; } = tourType;
+    public DateTime ProductuionDate { get; private set; } = date;
+    public int Count { get; private set; } = count;
+    public List<TourSuppliesDataModel> Tours { get; private set; } = tours;
+
+    public void Validate()
+    {
+        if (Id.IsEmpty())
+            throw new ValidationException("Field Id is empty");
+        if (!Id.IsGuid())
+            throw new ValidationException("The value in the field Id is not a unique identifier");
+        if (Type == TourType.None)
+            throw new ValidationException("Field Type is empty");
+        if (Count <= 0)
+            throw new ValidationException("Field Count is less than or equal to 0");
+        if ((Tours?.Count ?? 0) == 0)
+            throw new ValidationException("The sale must include tours");
+    }
+}
diff --git a/MagicCarpetProject/MagicCarpetContracts/DataModels/TourAgencyDataModel.cs b/MagicCarpetProject/MagicCarpetContracts/DataModels/TourAgencyDataModel.cs
new file mode 100644
index 0000000..d281971
--- /dev/null
+++ b/MagicCarpetProject/MagicCarpetContracts/DataModels/TourAgencyDataModel.cs
@@ -0,0 +1,32 @@
+using MagicCarpetContracts.Exceptions;
+using MagicCarpetContracts.Extensions;
+using MagicCarpetContracts.Infrastructure;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MagicCarpetContracts.DataModels;
+
+public class TourAgencyDataModel(string agencyId, string tourId, int count) : IValidation
+{
+    public string AgencyId { get; private set; } = agencyId;
+    public string TourId { get; private set; } = tourId;
+    public int Count { get; private set; } = count;
+
+    public void Validate()
+    {
+        if (AgencyId.IsEmpty())
+            throw new ValidationException("Field AgencyId is empty");
+        if (!AgencyId.IsGuid())
+            throw new ValidationException("The value in the field AgencyId is not a unique identifier");
+        if (TourId.IsEmpty())
+            throw new ValidationException("Field TourId is empty");
+        if (!TourId.IsGuid())
+            throw new ValidationException("The value in the field TourId is not a unique identifier");
+        if (Count <= 0)
+            throw new ValidationException("Field Count is less than or equal to 0");
+    }
+}
diff --git a/MagicCarpetProject/MagicCarpetContracts/DataModels/TourDataModel.cs b/MagicCarpetProject/MagicCarpetContracts/DataModels/TourDataModel.cs
index 35ccfb7..7ca8788 100644
--- a/MagicCarpetProject/MagicCarpetContracts/DataModels/TourDataModel.cs
+++ b/MagicCarpetProject/MagicCarpetContracts/DataModels/TourDataModel.cs
@@ -12,13 +12,16 @@ using System.Xml.Linq;
 
 namespace MagicCarpetContracts.DataModels;
 
-public class TourDataModel(string id, string tourName, string tourCountry, double price, TourType tourType) : IValidation
+public class TourDataModel(string id, string tourName, string tourCountry, double price, TourType tourType,
+    List<TourSuppliesDataModel> supplies, List<TourAgencyDataModel> agency) : IValidation
 {
     public string Id { get; private set; } = id;
     public string TourName { get; private set; } = tourName;
     public string TourCountry { get; private set; } = tourCountry;
     public double Price { get; private set; } = price;
     public TourType Type { get; private set; } = tourType;
+    public List<TourSuppliesDataModel> Supplies { get; private set; } = supplies;
+    public List<TourAgencyDataModel> Agency { get; private set; } = agency;
 
     public void Validate()
     {
@@ -34,5 +37,9 @@ public class TourDataModel(string id, string tourName, string tourCountry, doubl
             throw new ValidationException("Field Price is less than or equal to 0");
         if (Type == TourType.None)
             throw new ValidationException("Field Type is empty");
+        if ((Supplies?.Count ?? 0) == 0)
+            throw new ValidationException("The tour must include supplies");
+        if ((Agency?.Count ?? 0) == 0)
+            throw new ValidationException("The tour must include agency");
     }
 }
diff --git a/MagicCarpetProject/MagicCarpetContracts/DataModels/TourSuppliesDataModel.cs b/MagicCarpetProject/MagicCarpetContracts/DataModels/TourSuppliesDataModel.cs
new file mode 100644
index 0000000..2646eaf
--- /dev/null
+++ b/MagicCarpetProject/MagicCarpetContracts/DataModels/TourSuppliesDataModel.cs
@@ -0,0 +1,32 @@
+using MagicCarpetContracts.Exceptions;
+using MagicCarpetContracts.Extensions;
+using MagicCarpetContracts.Infrastructure;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MagicCarpetContracts.DataModels;
+
+public class TourSuppliesDataModel(string suppliesId, string tourId, int count) : IValidation
+{
+    public string SuppliesId { get; private set; } = suppliesId;
+    public string TourId { get; private set; } = tourId;
+    public int Count { get; private set; } = count;
+
+    public void Validate()
+    {
+        if (SuppliesId.IsEmpty())
+            throw new ValidationException("Field SuppliesId is empty");
+        if (!SuppliesId.IsGuid())
+            throw new ValidationException("The value in the field SuppliesId is not a unique identifier");
+        if (TourId.IsEmpty())
+            throw new ValidationException("Field TourId is empty");
+        if (!TourId.IsGuid())
+            throw new ValidationException("The value in the field BlandId is not a unique identifier");
+        if (Count <= 0)
+            throw new ValidationException("Field Count is less than or equal to 0");
+    }
+}
diff --git a/MagicCarpetProject/MagicCarpetTests/DataModelTests/AgencyDataModelTests.cs b/MagicCarpetProject/MagicCarpetTests/DataModelTests/AgencyDataModelTests.cs
new file mode 100644
index 0000000..ac7dd8b
--- /dev/null
+++ b/MagicCarpetProject/MagicCarpetTests/DataModelTests/AgencyDataModelTests.cs
@@ -0,0 +1,79 @@
+using MagicCarpetContracts.DataModels;
+using MagicCarpetContracts.Enums;
+using MagicCarpetContracts.Exceptions;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MagicCarpetTests.DataModelTests;
+
+[TestFixture]
+internal class AgencyDataModelTests
+{
+    [Test]
+    public void IdIsNullOrEmptyTest()
+    {
+        var model = CreateDataModel(null, TourType.Beach, 1, CreateSubDataModel());
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+        model = CreateDataModel(string.Empty, TourType.Beach, 1, CreateSubDataModel());
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void IdIsNotGuidTest()
+    {
+        var model = CreateDataModel("id", TourType.Beach, 1, CreateSubDataModel());
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void TypeIsNoneTest()
+    {
+        var model = CreateDataModel(Guid.NewGuid().ToString(), TourType.None, 1, CreateSubDataModel());
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void CountIsLessOrZeroTest()
+    {
+        var model = CreateDataModel(Guid.NewGuid().ToString(), TourType.None, 0, CreateSubDataModel());
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+
+        model = CreateDataModel(Guid.NewGuid().ToString(), TourType.None, -1, CreateSubDataModel());
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void ToursIsNullOrEmptyTest()
+    {
+        var sale = CreateDataModel(Guid.NewGuid().ToString(), TourType.Beach, 1, null);
+        Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+
+        sale = CreateDataModel(Guid.NewGuid().ToString(), TourType.Beach, 1, []);
+        Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void AllFieldsIsCorrectTest()
+    {
+        var id = Guid.NewGuid().ToString();
+        var type = TourType.Beach;
+        var count = 1;
+        var tours = CreateSubDataModel();
+        var model = CreateDataModel(id, type, count, tours);
+        Assert.DoesNotThrow(() => model.Validate());
+        Assert.Multiple(() =>
+        {
+            Assert.That(model.Id, Is.EqualTo(id));
+            Assert.That(model.Type, Is.EqualTo(type));
+            Assert.That(model.Count, Is.EqualTo(count));
+            Assert.That(model.Tours, Is.EqualTo(tours));
+        });
+    }
+
+    private static AgencyDataModel CreateDataModel(string? id, TourType type, int count, List<TourAgencyDataModel> tours)
+        => new AgencyDataModel(id, type, count, tours);
+    private static List<TourAgencyDataModel> CreateSubDataModel()
+        => [new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 1)];
+}
diff --git a/MagicCarpetProject/MagicCarpetTests/DataModelTests/SuppliesDataModelTests.cs b/MagicCarpetProject/MagicCarpetTests/DataModelTests/SuppliesDataModelTests.cs
new file mode 100644
index 0000000..30a071a
--- /dev/null
+++ b/MagicCarpetProject/MagicCarpetTests/DataModelTests/SuppliesDataModelTests.cs
@@ -0,0 +1,80 @@
+using MagicCarpetContracts.DataModels;
+using MagicCarpetContracts.Enums;
+using MagicCarpetContracts.Exceptions;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MagicCarpetTests.DataModelTests;
+
+[TestFixture]
+internal class SuppliesDataModelTests
+{
+    [Test]
+    public void IdIsNullOrEmptyTest()
+    {
+        var model = CreateDataModel(null, TourType.Beach, DateTime.Now, 1, CreateSubDataModel());
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+        model = CreateDataModel(string.Empty, TourType.Beach, DateTime.Now, 1, CreateSubDataModel());
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void IdIsNotGuidTest()
+    {
+        var model = CreateDataModel("id", TourType.Beach, DateTime.Now, 1, CreateSubDataModel());
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void TypeIsNoneTest()
+    {
+        var model = CreateDataModel(Guid.NewGuid().ToString(), TourType.None, DateTime.Now, 1, CreateSubDataModel());
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void CountIsLessOrZeroTest()
+    {
+        var model = CreateDataModel(Guid.NewGuid().ToString(), TourType.None, DateTime.Now, 0, CreateSubDataModel());
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+
+        model = CreateDataModel(Guid.NewGuid().ToString(), TourType.None, DateTime.Now, -1, CreateSubDataModel());
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+    }
+    [Test]
+    public void ToursIsNullOrEmptyTest()
+    {
+        var sale = CreateDataModel(Guid.NewGuid().ToString(), TourType.Beach, DateTime.Now, 1, null);
+        Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+        sale = CreateDataModel(Guid.NewGuid().ToString(), TourType.Beach, DateTime.Now, 1, []);
+        Assert.That(() => sale.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void AllFieldsIsCorrectTest()
+    {
+        var id = Guid.NewGuid().ToString();
+        var type = TourType.Beach;
+        var date = DateTime.Now;
+        var count = 1;
+        var tours = CreateSubDataModel();
+        var model = CreateDataModel(id, type, date, count, tours);
+        Assert.DoesNotThrow(() => model.Validate());
+        Assert.Multiple(() =>
+        {
+            Assert.That(model.Id, Is.EqualTo(id));
+            Assert.That(model.Type, Is.EqualTo(type));
+            Assert.That(model.ProductuionDate, Is.EqualTo(date));
+            Assert.That(model.Count, Is.EqualTo(count));
+            Assert.That(model.Tours, Is.EqualTo(tours));
+        });
+    }
+
+    private static SuppliesDataModel CreateDataModel(string? id, TourType type, DateTime date, int count, List<TourSuppliesDataModel> tours)
+            => new(id, type, date, count, tours);
+    private static List<TourSuppliesDataModel> CreateSubDataModel()
+        => [new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 1)];
+}
diff --git a/MagicCarpetProject/MagicCarpetTests/DataModelTests/TourAgencyDataModelTests.cs b/MagicCarpetProject/MagicCarpetTests/DataModelTests/TourAgencyDataModelTests.cs
new file mode 100644
index 0000000..079cc29
--- /dev/null
+++ b/MagicCarpetProject/MagicCarpetTests/DataModelTests/TourAgencyDataModelTests.cs
@@ -0,0 +1,75 @@
+using MagicCarpetContracts.DataModels;
+using MagicCarpetContracts.Exceptions;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MagicCarpetTests.DataModelTests;
+
+[TestFixture]
+internal class TourAgencyDataModelTests
+{
+    [Test]
+    public void AgencyIdIsNullOrEmptyTest()
+    {
+        var model = CreateDataModel(null, Guid.NewGuid().ToString(), 1);
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+
+        model = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), 1);
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void AgencyIdIsNotGuidTest()
+    {
+        var model = CreateDataModel("id", Guid.NewGuid().ToString(), 1);
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void TourIdIsNullOrEmptyTest()
+    {
+        var model = CreateDataModel(Guid.NewGuid().ToString(), null, 1);
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+
+        model = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, 1);
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void TourIdIsNotGuidTest()
+    {
+        var model = CreateDataModel(Guid.NewGuid().ToString(), "id", 1);
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void CountIsLessOrZeroTest()
+    {
+        var model = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 0);
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+        model = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), -1);
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void AllFieldsIsCorrectTest()
+    {
+        var agencyId = Guid.NewGuid().ToString();
+        var tourId = Guid.NewGuid().ToString();
+        var count = 1;
+        var model = CreateDataModel(agencyId, tourId, count);
+        Assert.That(() => model.Validate(), Throws.Nothing);
+        Assert.Multiple(() =>
+        {
+            Assert.That(model.AgencyId, Is.EqualTo(agencyId));
+            Assert.That(model.TourId, Is.EqualTo(tourId));
+            Assert.That(model.Count, Is.EqualTo(count));
+        });
+    }
+
+    private static TourAgencyDataModel CreateDataModel(string? agencyId, string? tourId, int count)
+        => new(agencyId, tourId, count);
+}
diff --git a/MagicCarpetProject/MagicCarpetTests/DataModelTests/TourDataModelTests.cs b/MagicCarpetProject/MagicCarpetTests/DataModelTests/TourDataModelTests.cs
index d97512f..40dc4fe 100644
--- a/MagicCarpetProject/MagicCarpetTests/DataModelTests/TourDataModelTests.cs
+++ b/MagicCarpetProject/MagicCarpetTests/DataModelTests/TourDataModelTests.cs
@@ -3,6 +3,7 @@ using MagicCarpetContracts.Enums;
 using MagicCarpetContracts.Exceptions;
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -14,50 +15,79 @@ internal class TourDataModelTests
     [Test]
     public void IdIsNullOrEmptyTest()
     {
-        var cocktail = CreateDataModel(null, "name", "country", 10.5, TourType.Beach);
+        var cocktail = CreateDataModel(null, "name", "country", 10.5, TourType.Beach,
+            CreateSuppliesDataModel(), CreateAgencyDataModel());
         Assert.That(() => cocktail.Validate(), Throws.TypeOf<ValidationException>());
-        cocktail = CreateDataModel(string.Empty, "name", "country", 10.5, TourType.Beach);
+        cocktail = CreateDataModel(string.Empty, "name", "country", 10.5, TourType.Beach,
+            CreateSuppliesDataModel(), CreateAgencyDataModel());
         Assert.That(() => cocktail.Validate(), Throws.TypeOf<ValidationException>());
     }
 
     [Test]
     public void IdIsNotGuidTest()
     {
-        var cocktail = CreateDataModel("id", "name", "country", 10.5, TourType.Beach);
+        var cocktail = CreateDataModel("id", "name", "country", 10.5, TourType.Beach,
+            CreateSuppliesDataModel(), CreateAgencyDataModel());
         Assert.That(() => cocktail.Validate(), Throws.TypeOf<ValidationException>());
     }
 
     [Test]
     public void TourNameIsNullOrEmptyTest()
     {
-        var cocktail = CreateDataModel(Guid.NewGuid().ToString(), null, "country", 10.5, TourType.Beach);
+        var cocktail = CreateDataModel(Guid.NewGuid().ToString(), null, "country", 10.5, TourType.Beach,
+            CreateSuppliesDataModel(), CreateAgencyDataModel());
         Assert.That(() => cocktail.Validate(), Throws.TypeOf<ValidationException>());
-        cocktail = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, "country", 10.5, TourType.Beach);
+        cocktail = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, "country", 10.5, TourType.Beach,
+            CreateSuppliesDataModel(), CreateAgencyDataModel());
         Assert.That(() => cocktail.Validate(), Throws.TypeOf<ValidationException>());
     }
     public void TourCountryIsNullOrEmptyTest()
     {
-        var cocktail = CreateDataModel(Guid.NewGuid().ToString(), "name", null, 10.5, TourType.Beach);
+        var cocktail = CreateDataModel(Guid.NewGuid().ToString(), "name", null, 10.5, TourType.Beach,
+            CreateSuppliesDataModel(), CreateAgencyDataModel());
         Assert.That(() => cocktail.Validate(), Throws.TypeOf<ValidationException>());
-        cocktail = CreateDataModel(Guid.NewGuid().ToString(), "name", string.Empty, 10.5, TourType.Beach);
+        cocktail = CreateDataModel(Guid.NewGuid().ToString(), "name", string.Empty, 10.5, TourType.Beach,
+            CreateSuppliesDataModel(), CreateAgencyDataModel());
         Assert.That(() => cocktail.Validate(), Throws.TypeOf<ValidationException>());
     }
 
     [Test]
     public void PriceIsLessOrZeroTest()
     {
-        var cocktail = CreateDataModel(Guid.NewGuid().ToString(), null, null, 0, TourType.Beach);
+        var cocktail = CreateDataModel(Guid.NewGuid().ToString(), null, null, 0, TourType.Beach,
+            CreateSuppliesDataModel(), CreateAgencyDataModel());
         Assert.That(() => cocktail.Validate(), Throws.TypeOf<ValidationException>());
-        cocktail = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, string.Empty, -10.5, TourType.Beach);
+        cocktail = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, string.Empty, -10.5, TourType.Beach,
+            CreateSuppliesDataModel(), CreateAgencyDataModel());
         Assert.That(() => cocktail.Validate(), Throws.TypeOf<ValidationException>());
     }
 
     [Test]
     public void TourTypeIsNoneTest()
     {
-        var cocktail = CreateDataModel(Guid.NewGuid().ToString(), null, null, 0, TourType.Beach);
+        var cocktail = CreateDataModel(Guid.NewGuid().ToString(), null, null, 0, TourType.Beach,
+            CreateSuppliesDataModel(), CreateAgencyDataModel());
         Assert.That(() => cocktail.Validate(), Throws.TypeOf<ValidationException>());
     }
+    [Test]
+    public void SuppliesIsEmptyOrNullTest()
+    {
+        var model = CreateDataModel(Guid.NewGuid().ToString(), "name", "country", 10.5, TourType.Beach, [], CreateAgencyDataModel());
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+
+        model = CreateDataModel(Guid.NewGuid().ToString(), "name", "country", 10.5, TourType.Beach, null, CreateAgencyDataModel());
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void AgencyIsEmptyOrNullTest()
+    {
+        var model = CreateDataModel(Guid.NewGuid().ToString(), "name", "country", 10.5, TourType.Beach, CreateSuppliesDataModel(), []);
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+
+        model = CreateDataModel(Guid.NewGuid().ToString(), "name", "country", 10.5, TourType.Beach, CreateSuppliesDataModel(), null);
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+    }
 
     [Test]
     public void AllFieldsIsCorrectTest()
@@ -67,7 +97,9 @@ internal class TourDataModelTests
         var tourCountry = "country";
         var price = 10.5;
         var tourType = TourType.Ski;
-        var tour = CreateDataModel(tourId, tourName, tourCountry, price, tourType);
+        var supplies = CreateSuppliesDataModel();
+        var agency = CreateAgencyDataModel();
+        var tour = CreateDataModel(tourId, tourName, tourCountry, price, tourType, supplies, agency);
         Assert.That(() => tour.Validate(), Throws.Nothing);
         Assert.Multiple(() =>
         {
@@ -76,9 +108,17 @@ internal class TourDataModelTests
             Assert.That(tour.TourCountry, Is.EqualTo(tourCountry));
             Assert.That(tour.Price, Is.EqualTo(price));
             Assert.That(tour.Type, Is.EqualTo(tourType));
+            Assert.That(tour.Supplies, Is.EqualTo(supplies));
+            Assert.That(tour.Agency, Is.EqualTo(agency));
         });
     }
 
-    private static TourDataModel CreateDataModel(string? id, string? tourName, string? countryName,double price, TourType tourType) =>
-        new(id, tourName, countryName,price, tourType);
+    private static TourDataModel CreateDataModel(string? id, string? tourName, string? countryName, double price, TourType tourType,
+         List<TourSuppliesDataModel> supplies, List<TourAgencyDataModel> agency) =>
+        new(id, tourName, countryName,price, tourType, supplies, agency);
+    private static List<TourSuppliesDataModel> CreateSuppliesDataModel()
+                => [new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 1)];
+
+    private static List<TourAgencyDataModel> CreateAgencyDataModel()
+                => [new(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 1)];
 }
diff --git a/MagicCarpetProject/MagicCarpetTests/DataModelTests/TourSuppliesDataModelTests.cs b/MagicCarpetProject/MagicCarpetTests/DataModelTests/TourSuppliesDataModelTests.cs
new file mode 100644
index 0000000..594d7fc
--- /dev/null
+++ b/MagicCarpetProject/MagicCarpetTests/DataModelTests/TourSuppliesDataModelTests.cs
@@ -0,0 +1,75 @@
+using MagicCarpetContracts.DataModels;
+using MagicCarpetContracts.Exceptions;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MagicCarpetTests.DataModelTests;
+
+[TestFixture]
+internal class TourSuppliesDataModelTests
+{
+    [Test]
+    public void SuppliesIdIsNullOrEmptyTest()
+    {
+        var model = CreateDataModel(null, Guid.NewGuid().ToString(), 1);
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+
+        model = CreateDataModel(string.Empty, Guid.NewGuid().ToString(), 1);
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void SuppliesIdIsNotGuidTest()
+    {
+        var model = CreateDataModel("id", Guid.NewGuid().ToString(), 1);
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void TourIdIsNullOrEmptyTest()
+    {
+        var model = CreateDataModel(Guid.NewGuid().ToString(), null, 1);
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+
+        model = CreateDataModel(Guid.NewGuid().ToString(), string.Empty, 1);
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void TourIdIsNotGuidTest()
+    {
+        var model = CreateDataModel(Guid.NewGuid().ToString(), "id", 1);
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void CountIsLessOrZeroTest()
+    {
+        var model = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), 0);
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+        model = CreateDataModel(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(), -1);
+        Assert.That(() => model.Validate(), Throws.TypeOf<ValidationException>());
+    }
+
+    [Test]
+    public void AllFieldsIsCorrectTest()
+    {
+        var suppliesId = Guid.NewGuid().ToString();
+        var tourId = Guid.NewGuid().ToString();
+        var count = 1;
+        var model = CreateDataModel(suppliesId, tourId, count);
+        Assert.That(() => model.Validate(), Throws.Nothing);
+        Assert.Multiple(() =>
+        {
+            Assert.That(model.SuppliesId, Is.EqualTo(suppliesId));
+            Assert.That(model.TourId, Is.EqualTo(tourId));
+            Assert.That(model.Count, Is.EqualTo(count));
+        });
+    }
+
+    private static TourSuppliesDataModel CreateDataModel(string? suppliesId, string? tourId, int count)
+        => new(suppliesId, tourId, count);
+}