diff --git a/src/portalbackend/PortalBackend.DBAccess/Models/CompanyCertificateTypeData.cs b/src/portalbackend/PortalBackend.DBAccess/Models/CompanyCertificateTypeData.cs
index df7094e6b9..6458b65364 100644
--- a/src/portalbackend/PortalBackend.DBAccess/Models/CompanyCertificateTypeData.cs
+++ b/src/portalbackend/PortalBackend.DBAccess/Models/CompanyCertificateTypeData.cs
@@ -17,7 +17,7 @@
  * SPDX-License-Identifier: Apache-2.0
  ********************************************************************************/
 
-using Org.Eclipse.TractusX.Portal.Backend.PortalBackend.PortalEntities;
+using System.Text.Json.Serialization;
 using Org.Eclipse.TractusX.Portal.Backend.PortalBackend.PortalEntities.Enums;
 
 namespace Org.Eclipse.TractusX.Portal.Backend.PortalBackend.DBAccess.Models;
@@ -25,10 +25,12 @@ namespace Org.Eclipse.TractusX.Portal.Backend.PortalBackend.DBAccess.Models;
 /// <summary>
 /// Model for CompanyCertificateTypeData
 /// </summary>]
-/// <param name="companyCertificateId">CompanyCertificate Type Id</param>
-/// <param name="description">description</param>
+/// <param name="CompanyCertificateTypeId">CompanyCertificate Type Id</param>
+/// <param name="Description">description</param>
 /// <returns></returns>
-public record CompanyCertificateTypeData(CompanyCertificateTypeId companyCertificateId, IEnumerable<CertificateTypeDescription> description);
+public record CompanyCertificateTypeData(
+    [property: JsonPropertyName("certificateType")] CompanyCertificateTypeId CompanyCertificateTypeId,
+    IEnumerable<CertificateTypeDescription> Description);
 
 /// <summary>
 /// Model for CertificateTypeDescription
diff --git a/src/portalbackend/PortalBackend.DBAccess/Repositories/StaticDataRepository.cs b/src/portalbackend/PortalBackend.DBAccess/Repositories/StaticDataRepository.cs
index 477bfc8630..47b0a8bf4e 100644
--- a/src/portalbackend/PortalBackend.DBAccess/Repositories/StaticDataRepository.cs
+++ b/src/portalbackend/PortalBackend.DBAccess/Repositories/StaticDataRepository.cs
@@ -105,12 +105,12 @@ public IAsyncEnumerable<LicenseTypeData> GetLicenseTypeData() =>
     ///<inheritdoc />        
     public IAsyncEnumerable<CompanyCertificateTypeData> GetCertificateTypes() =>
         _dbContext.CompanyCertificateTypes.AsNoTracking()
-             .Select(certificate => new CompanyCertificateTypeData
+            .Where(type => type.CompanyCertificateTypeAssignedStatus!.CompanyCertificateTypeStatusId == CompanyCertificateTypeStatusId.ACTIVE)
+            .Select(type => new CompanyCertificateTypeData
                 (
-                    certificate.Id,
-                    certificate.CompanyCertificateTypeDescriptions
-                    .Where(y => y.CompanyCertificateType.CompanyCertificateTypeAssignedStatus.CompanyCertificateTypeStatusId == CompanyCertificateTypeStatusId.ACTIVE)
-                    .Select(x => new CertificateTypeDescription(x.LanguageShortName, x.Description))
+                    type.Id,
+                    type.CompanyCertificateTypeDescriptions
+                        .Select(x => new CertificateTypeDescription(x.LanguageShortName, x.Description))
                 ))
             .AsAsyncEnumerable();
 }
diff --git a/src/portalbackend/PortalBackend.PortalEntities/Entities/CompanyCertificateStatus.cs b/src/portalbackend/PortalBackend.PortalEntities/Entities/CompanyCertificateStatus.cs
index 2c29495500..a078cb5bf3 100644
--- a/src/portalbackend/PortalBackend.PortalEntities/Entities/CompanyCertificateStatus.cs
+++ b/src/portalbackend/PortalBackend.PortalEntities/Entities/CompanyCertificateStatus.cs
@@ -27,6 +27,7 @@ public class CompanyCertificateStatus
     private CompanyCertificateStatus()
     {
         Label = null!;
+        CompanyCertificates = new HashSet<CompanyCertificate>();
     }
 
     public CompanyCertificateStatus(CompanyCertificateStatusId certificateStatusId) : this()
@@ -39,4 +40,8 @@ public CompanyCertificateStatus(CompanyCertificateStatusId certificateStatusId)
 
     [MaxLength(255)]
     public string Label { get; private set; }
+
+    // Navigation Properties
+
+    public virtual ICollection<CompanyCertificate> CompanyCertificates { get; private set; }
 }
diff --git a/src/portalbackend/PortalBackend.PortalEntities/Entities/CompanyCertificateType.cs b/src/portalbackend/PortalBackend.PortalEntities/Entities/CompanyCertificateType.cs
index 6ee4a2adc8..33678a1cfd 100644
--- a/src/portalbackend/PortalBackend.PortalEntities/Entities/CompanyCertificateType.cs
+++ b/src/portalbackend/PortalBackend.PortalEntities/Entities/CompanyCertificateType.cs
@@ -28,6 +28,7 @@ private CompanyCertificateType()
     {
         Label = null!;
         CompanyCertificates = new HashSet<CompanyCertificate>();
+        CompanyCertificateTypeDescriptions = new HashSet<CompanyCertificateTypeDescription>();
     }
 
     public CompanyCertificateType(CompanyCertificateTypeId companyCertificateTypeId) : this()
diff --git a/src/portalbackend/PortalBackend.PortalEntities/Entities/CompanyCertificateTypeStatus.cs b/src/portalbackend/PortalBackend.PortalEntities/Entities/CompanyCertificateTypeStatus.cs
index 89d958dbac..fab6127418 100644
--- a/src/portalbackend/PortalBackend.PortalEntities/Entities/CompanyCertificateTypeStatus.cs
+++ b/src/portalbackend/PortalBackend.PortalEntities/Entities/CompanyCertificateTypeStatus.cs
@@ -27,6 +27,7 @@ public class CompanyCertificateTypeStatus
     private CompanyCertificateTypeStatus()
     {
         Label = null!;
+        CompanyCertificateTypeAssignedStatuses = new HashSet<CompanyCertificateTypeAssignedStatus>();
     }
 
     public CompanyCertificateTypeStatus(CompanyCertificateTypeStatusId companyCertificateTypeStatusId)
diff --git a/tests/portalbackend/PortalBackend.DBAccess.Tests/StaticDataRepositoryTest.cs b/tests/portalbackend/PortalBackend.DBAccess.Tests/StaticDataRepositoryTest.cs
index 25d6ff73a0..57bbbb926e 100644
--- a/tests/portalbackend/PortalBackend.DBAccess.Tests/StaticDataRepositoryTest.cs
+++ b/tests/portalbackend/PortalBackend.DBAccess.Tests/StaticDataRepositoryTest.cs
@@ -21,6 +21,7 @@
 using Org.Eclipse.TractusX.Portal.Backend.PortalBackend.DBAccess.Models;
 using Org.Eclipse.TractusX.Portal.Backend.PortalBackend.DBAccess.Repositories;
 using Org.Eclipse.TractusX.Portal.Backend.PortalBackend.DBAccess.Tests.Setup;
+using Org.Eclipse.TractusX.Portal.Backend.PortalBackend.PortalEntities;
 using Org.Eclipse.TractusX.Portal.Backend.PortalBackend.PortalEntities.Enums;
 using Xunit.Extensions.AssemblyFixture;
 
@@ -171,6 +172,33 @@ public async Task GetCertificateTypes_ReturnsExpectedResult()
         results.Should().HaveCount(12);
     }
 
+    [Fact]
+    public async Task GetCertificateTypes_WithInactiveCertificateType_ReturnsExpectedResult()
+    {
+        // Arrange
+        var (context, sut) = await CreateSutWithContext().ConfigureAwait(false);
+        var active = new CompanyCertificateTypeAssignedStatus(CompanyCertificateTypeId.ISO_15504_SPICE, CompanyCertificateTypeStatusId.ACTIVE);
+        var inactive = new CompanyCertificateTypeAssignedStatus(CompanyCertificateTypeId.ISO_15504_SPICE, CompanyCertificateTypeStatusId.INACTVIE);
+        context.Remove(active);
+        context.Add(inactive);
+        await context.SaveChangesAsync().ConfigureAwait(false);
+
+        try
+        {
+            // Act
+            var results = await sut.GetCertificateTypes().ToListAsync().ConfigureAwait(false);
+
+            // Assert
+            results.Should().HaveCount(11);
+        }
+        finally
+        {
+            context.Remove(inactive);
+            context.Add(active);
+            await context.SaveChangesAsync().ConfigureAwait(false);
+        }
+    }
+
     #endregion
 
     #region setup
@@ -182,5 +210,12 @@ private async Task<StaticDataRepository> CreateSut()
         return sut;
     }
 
+    private async Task<(PortalDbContext, StaticDataRepository)> CreateSutWithContext()
+    {
+        var context = await _dbTestDbFixture.GetPortalDbContext().ConfigureAwait(false);
+        var sut = new StaticDataRepository(context);
+        return (context, sut);
+    }
+
     #endregion
 }