diff --git a/src/ZB.MOM.WW.ScadaBridge.Commons/Interfaces/Repositories/INotificationRepository.cs b/src/ZB.MOM.WW.ScadaBridge.Commons/Interfaces/Repositories/INotificationRepository.cs
index 88c3aa0c..ae822a21 100644
--- a/src/ZB.MOM.WW.ScadaBridge.Commons/Interfaces/Repositories/INotificationRepository.cs
+++ b/src/ZB.MOM.WW.ScadaBridge.Commons/Interfaces/Repositories/INotificationRepository.cs
@@ -124,6 +124,12 @@ public interface INotificationRepository
     /// <returns>A task representing the asynchronous operation.</returns>
     Task UpdateSmsConfigurationAsync(SmsConfiguration smsConfiguration, CancellationToken cancellationToken = default);
 
+    /// <summary>Deletes an SMS configuration by ID.</summary>
+    /// <param name="id">The SMS configuration ID.</param>
+    /// <param name="cancellationToken">Cancellation token.</param>
+    /// <returns>A task representing the asynchronous operation.</returns>
+    Task DeleteSmsConfigurationAsync(int id, CancellationToken cancellationToken = default);
+
     /// <summary>Saves pending changes to the repository.</summary>
     /// <param name="cancellationToken">Cancellation token.</param>
     /// <returns>The number of entities saved.</returns>
diff --git a/src/ZB.MOM.WW.ScadaBridge.ConfigurationDatabase/Configurations/NotificationConfiguration.cs b/src/ZB.MOM.WW.ScadaBridge.ConfigurationDatabase/Configurations/NotificationConfiguration.cs
index 7343be1e..a6171829 100644
--- a/src/ZB.MOM.WW.ScadaBridge.ConfigurationDatabase/Configurations/NotificationConfiguration.cs
+++ b/src/ZB.MOM.WW.ScadaBridge.ConfigurationDatabase/Configurations/NotificationConfiguration.cs
@@ -57,8 +57,7 @@ public class NotificationRecipientConfiguration : IEntityTypeConfiguration<Notif
 
 public class SmsConfigurationConfiguration : IEntityTypeConfiguration<SmsConfiguration>
 {
-    /// <summary>Configures the EF Core mapping for <see cref="SmsConfiguration"/>.</summary>
-    /// <param name="builder">The entity type builder.</param>
+    /// <inheritdoc />
     public void Configure(EntityTypeBuilder<SmsConfiguration> builder)
     {
         builder.HasKey(s => s.Id);
diff --git a/src/ZB.MOM.WW.ScadaBridge.ConfigurationDatabase/Repositories/NotificationRepository.cs b/src/ZB.MOM.WW.ScadaBridge.ConfigurationDatabase/Repositories/NotificationRepository.cs
index 6bbeebd8..96ab8843 100644
--- a/src/ZB.MOM.WW.ScadaBridge.ConfigurationDatabase/Repositories/NotificationRepository.cs
+++ b/src/ZB.MOM.WW.ScadaBridge.ConfigurationDatabase/Repositories/NotificationRepository.cs
@@ -104,6 +104,13 @@ public class NotificationRepository : INotificationRepository
     public Task UpdateSmsConfigurationAsync(SmsConfiguration smsConfiguration, CancellationToken cancellationToken = default)
     { _context.Set<SmsConfiguration>().Update(smsConfiguration); return Task.CompletedTask; }
 
+    /// <inheritdoc />
+    public async Task DeleteSmsConfigurationAsync(int id, CancellationToken cancellationToken = default)
+    {
+        var entity = await _context.Set<SmsConfiguration>().FindAsync(new object[] { id }, cancellationToken);
+        if (entity != null) _context.Set<SmsConfiguration>().Remove(entity);
+    }
+
     /// <inheritdoc />
     public async Task<int> SaveChangesAsync(CancellationToken cancellationToken = default)
         => await _context.SaveChangesAsync(cancellationToken);
diff --git a/src/ZB.MOM.WW.ScadaBridge.SiteRuntime/Repositories/SiteNotificationRepository.cs b/src/ZB.MOM.WW.ScadaBridge.SiteRuntime/Repositories/SiteNotificationRepository.cs
index e3fb966a..f40ae81e 100644
--- a/src/ZB.MOM.WW.ScadaBridge.SiteRuntime/Repositories/SiteNotificationRepository.cs
+++ b/src/ZB.MOM.WW.ScadaBridge.SiteRuntime/Repositories/SiteNotificationRepository.cs
@@ -211,6 +211,10 @@ public class SiteNotificationRepository : INotificationRepository
     public Task UpdateSmsConfigurationAsync(SmsConfiguration smsConfiguration, CancellationToken cancellationToken = default)
         => throw new NotSupportedException("Managed via artifact deployment from Central");
 
+    /// <inheritdoc />
+    public Task DeleteSmsConfigurationAsync(int id, CancellationToken cancellationToken = default)
+        => throw new NotSupportedException("Managed via artifact deployment from Central");
+
     /// <inheritdoc />
     public Task<int> SaveChangesAsync(CancellationToken cancellationToken = default)
         => throw new NotSupportedException("Managed via artifact deployment from Central");
diff --git a/tests/ZB.MOM.WW.ScadaBridge.ConfigurationDatabase.Tests/RepositoryCoverageTests.cs b/tests/ZB.MOM.WW.ScadaBridge.ConfigurationDatabase.Tests/RepositoryCoverageTests.cs
index c532b71f..0ce7297d 100644
--- a/tests/ZB.MOM.WW.ScadaBridge.ConfigurationDatabase.Tests/RepositoryCoverageTests.cs
+++ b/tests/ZB.MOM.WW.ScadaBridge.ConfigurationDatabase.Tests/RepositoryCoverageTests.cs
@@ -226,6 +226,34 @@ public class NotificationRepositoryTests : IDisposable
         Assert.Null(await _repository.GetNotificationListByIdAsync(list.Id));
     }
 
+    [Fact]
+    public async Task AddSmsConfiguration_RoundTrips()
+    {
+        var sms = new SmsConfiguration("ACtest123", "+14155550100");
+        await _repository.AddSmsConfigurationAsync(sms);
+        await _repository.SaveChangesAsync();
+
+        var loaded = await _repository.GetSmsConfigurationAsync();
+        Assert.NotNull(loaded);
+        Assert.Equal("ACtest123", loaded!.AccountSid);
+        Assert.Equal("+14155550100", loaded.FromNumber);
+
+        // Update a field and verify GetAllSmsConfigurationsAsync reflects it.
+        loaded.FromNumber = "+14155550199";
+        await _repository.UpdateSmsConfigurationAsync(loaded);
+        await _repository.SaveChangesAsync();
+
+        var all = await _repository.GetAllSmsConfigurationsAsync();
+        Assert.Single(all);
+        Assert.Equal("+14155550199", all[0].FromNumber);
+
+        // Delete and verify removal.
+        await _repository.DeleteSmsConfigurationAsync(loaded.Id);
+        await _repository.SaveChangesAsync();
+
+        Assert.Null(await _repository.GetSmsConfigurationAsync());
+    }
+
     [Fact]
     public async Task NotificationList_PersistsType()
     {
diff --git a/tests/ZB.MOM.WW.ScadaBridge.ConfigurationDatabase.Tests/UnitTest1.cs b/tests/ZB.MOM.WW.ScadaBridge.ConfigurationDatabase.Tests/UnitTest1.cs
index e1c5b0bf..1fc5dcd0 100644
--- a/tests/ZB.MOM.WW.ScadaBridge.ConfigurationDatabase.Tests/UnitTest1.cs
+++ b/tests/ZB.MOM.WW.ScadaBridge.ConfigurationDatabase.Tests/UnitTest1.cs
@@ -53,6 +53,7 @@ public class DbContextTests : IDisposable
         Assert.NotNull(_context.NotificationLists);
         Assert.NotNull(_context.NotificationRecipients);
         Assert.NotNull(_context.SmtpConfigurations);
+        Assert.NotNull(_context.SmsConfigurations);
         Assert.NotNull(_context.SharedScripts);
         Assert.NotNull(_context.LdapGroupMappings);
         Assert.NotNull(_context.SiteScopeRules);