diff --git a/commercetools.Sdk/Tests/commercetools.Api.Tests/ClientsFactoryTests.cs b/commercetools.Sdk/Tests/commercetools.Api.Tests/ClientsFactoryTests.cs
new file mode 100644
index 00000000000..7b1f0043794
--- /dev/null
+++ b/commercetools.Sdk/Tests/commercetools.Api.Tests/ClientsFactoryTests.cs
@@ -0,0 +1,49 @@
+using System;
+using System.ComponentModel.DataAnnotations;
+using commercetools.Base.Client;
+using commercetools.Sdk.Api;
+using commercetools.Sdk.Api.Serialization;
+using Microsoft.Extensions.DependencyInjection;
+using Xunit;
+
+namespace commercetools.Api.Tests
+{
+    public class ClientsFactoryTests
+    {
+        [Fact]
+        public void TestClientConfigValidation()
+        {
+            //arrange
+            var s = new ServiceCollection();
+            s.UseCommercetoolsApiSerialization();
+            var p = s.BuildServiceProvider();
+            var serializerService = p.GetService<SerializerService>();
+            var clientConfig = new ClientConfiguration
+            {
+                ClientId = "ClientId",
+                ClientSecret = "ClientSecret",
+                ProjectKey = "test",
+                ApiBaseAddress = "https://api.europe-west1.gcp.commercetools.com",
+                AuthorizationBaseAddress = "https://auth.europe-west1.gcp.commercetools.com/"
+            };
+
+            //act
+            Exception validationEx = null;
+            try
+            {
+                var tokenProvider = TokenProviderFactory
+                    .CreateClientCredentialsTokenProvider(clientConfig, null);
+
+                ClientFactory.Create("test", clientConfig, null, serializerService, tokenProvider);
+            }
+            catch (Exception e)
+            {
+                validationEx = e;
+            }
+
+            //assert
+            Assert.NotNull(validationEx);
+            Assert.IsType<ValidationException>(validationEx);
+        }
+    }
+}
\ No newline at end of file
diff --git a/commercetools.Sdk/commercetools.Base.Client/ClientConfiguration.cs b/commercetools.Sdk/commercetools.Base.Client/ClientConfiguration.cs
index ed37e2697d1..ea1a78c7a9d 100644
--- a/commercetools.Sdk/commercetools.Base.Client/ClientConfiguration.cs
+++ b/commercetools.Sdk/commercetools.Base.Client/ClientConfiguration.cs
@@ -12,9 +12,15 @@ public class ClientConfiguration : IClientConfiguration
 
         public string ProjectKey { get; set; }
 
+        /// <summary>
+        /// Authorization Base Address Url like: "https://auth.europe-west1.gcp.commercetools.com/"
+        /// </summary>
         [RegularExpression(@"^.*/$", ErrorMessage = "ClientConfiguration AuthorizationBaseAddress URI should end with slash.")]
         public string AuthorizationBaseAddress { get; set; } = "https://auth.europe-west1.gcp.commercetools.com/";
 
+        /// <summary>
+        /// Api Base Address Url like: "https://api.europe-west1.gcp.commercetools.com/"
+        /// </summary>
         [RegularExpression(@"^.*/$", ErrorMessage = "ClientConfiguration ApiBaseAddress URI should end with slash.")]
         public string ApiBaseAddress { get; set; } = "https://api.europe-west1.gcp.commercetools.com/";
     }
diff --git a/commercetools.Sdk/commercetools.Base.Client/ClientFactory.cs b/commercetools.Sdk/commercetools.Base.Client/ClientFactory.cs
index 6c05083f714..67230c6388e 100644
--- a/commercetools.Sdk/commercetools.Base.Client/ClientFactory.cs
+++ b/commercetools.Sdk/commercetools.Base.Client/ClientFactory.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
 using System.Dynamic;
 using System.Net.Http;
 using System.Security;
@@ -18,6 +19,7 @@ public static IClient Create(
             ISerializerService serializerService,
             ITokenProvider tokenProvider)
         {
+            Validator.ValidateObject(configuration, new ValidationContext(configuration), true);
             return new CtpClient(
                 CreateMiddlewareStack(clientName, configuration, factory, tokenProvider),
                 serializerService,
diff --git a/commercetools.Sdk/commercetools.Base.Client/TokenProviderFactory.cs b/commercetools.Sdk/commercetools.Base.Client/TokenProviderFactory.cs
index e581b487e0d..a9940205dfe 100644
--- a/commercetools.Sdk/commercetools.Base.Client/TokenProviderFactory.cs
+++ b/commercetools.Sdk/commercetools.Base.Client/TokenProviderFactory.cs
@@ -1,3 +1,4 @@
+using System.ComponentModel.DataAnnotations;
 using System.Net.Http;
 using commercetools.Base.Client.Tokens;
 
@@ -43,6 +44,7 @@ private static ITokenProvider Create(
             IAnonymousCredentialsStoreManager anonymousCredentials = null
             )
         {
+            Validator.ValidateObject(configuration, new ValidationContext(configuration), true);
             ITokenProvider provider = null;
             var authClient = factory.CreateClient(DefaultClientNames.Authorization);
             var serializerService = new TokenSerializerService();