diff --git a/Controllers/Applications/ApplicationsController+Custom.cs b/Controllers/Applications/ApplicationsController+Custom.cs
index fa9ae51..88506e0 100644
--- a/Controllers/Applications/ApplicationsController+Custom.cs
+++ b/Controllers/Applications/ApplicationsController+Custom.cs
@@ -63,6 +63,27 @@ namespace xIds.Controllers
                     XException.NotFound.Throw();
                 }
 
+                //
+                // Noramlize TimeSpan ...
+                var expirationTimeSpan = TimeSpan
+                    .FromMinutes(apiKeyConfiguration.DefaultExpirationMinutes);
+                if (
+                    request.ExpirationMinutes.HasValue &&
+                    request.ExpirationMinutes.Value > 0
+                )
+                {
+                    //
+                    // Normalize Expiration Minutes ...
+                    int minutes = request.ExpirationMinutes.Value;
+                    if (minutes > apiKeyConfiguration.MaxExpirationMinutes)
+                    {
+                        minutes = apiKeyConfiguration.MaxExpirationMinutes;
+                    }
+
+                    //
+                    expirationTimeSpan = TimeSpan.FromMinutes(minutes);
+                }
+
                 //
                 var result = await provider.CreateApiKey(
                     userInfo: userInfo,
@@ -70,7 +91,7 @@ namespace xIds.Controllers
                     applicationId: applicationId,
                     rateLimit: request.RateLimit,
                     allowedIPs: request.AllowedIPs,
-                    expiration: request.Expiration,
+                    expiration: expirationTimeSpan,
                     cancellationToken: cancellationToken
                 );
 
diff --git a/Providers/XApplicationProvider.cs b/Providers/XApplicationProvider.cs
index 7adc86a..9522698 100644
--- a/Providers/XApplicationProvider.cs
+++ b/Providers/XApplicationProvider.cs
@@ -14,6 +14,7 @@ using IdentityServer4.Extensions;
 using xIdentityModels.Extensions;
 using Microsoft.EntityFrameworkCore.Query;
 using Microsoft.Extensions.Caching.Memory;
+using AutoMapper;
 
 namespace xIds.Providers
 {
@@ -28,6 +29,7 @@ namespace xIds.Providers
         private readonly IXIdentityManager identityManager;
         private readonly XDataServiceConfiguration configuration;
         private readonly XApiKeyConfiguration apiKeyConfiguration;
+        private readonly Action<IMapperConfigurationExpression> mapperConfigurationExp;
 
         public XApplicationProvider(
             IMemoryCache cache,
@@ -45,6 +47,23 @@ namespace xIds.Providers
             this.configuration = configuration;
             this.identityManager = identityManager;
             this.apiKeyConfiguration = apiKeyConfiguration;
+
+            //
+            // Configure Mapper Options ...
+            mapperConfigurationExp = cfg =>
+            {
+                //
+                cfg.CreateMap<XApiKey, XApiKeyDto>()
+                    .ReverseMap();
+
+                //
+                cfg.CreateMap<XApplication, XApplicationDto>()
+                    .ReverseMap();
+
+                //
+                cfg.CreateMap<XApiKeyUsage, XApiKeyUsageDto>()
+                    .ReverseMap();
+            };
         }
 
         /// <summary>
@@ -288,14 +307,14 @@ namespace xIds.Providers
         /// <param name="limitPerMinute"></param>
         /// <returns></returns>
         private bool CheckRateLimit(
-            Guid apiKeyId, 
+            Guid apiKeyId,
             int limitPerMinute
         )
         {
             //
             var cacheKey = $"ratelimit:{apiKeyId}";
             var currentCount = cache.GetOrCreate(
-                cacheKey, 
+                cacheKey,
                 entry =>
                 {
                     //
@@ -305,14 +324,15 @@ namespace xIds.Providers
             );
 
             //
-            if (currentCount >= limitPerMinute) {
+            if (currentCount >= limitPerMinute)
+            {
                 return false;
             }
 
             //
             cache.Set(
-                cacheKey, 
-                currentCount + 1, 
+                cacheKey,
+                currentCount + 1,
                 TimeSpan.FromMinutes(1)
             );
 
diff --git a/Providers/XApplicationProvider/XApplicationProvider+Enricher.cs b/Providers/XApplicationProvider/XApplicationProvider+Enricher.cs
index 187d8e0..fe6b93b 100644
--- a/Providers/XApplicationProvider/XApplicationProvider+Enricher.cs
+++ b/Providers/XApplicationProvider/XApplicationProvider+Enricher.cs
@@ -25,7 +25,7 @@ namespace xIds.Providers
         )
         {
             //
-            var result = source.MapConvert<XApiKeyDto, XApiKey>();
+            var result = source.MapConvert<XApiKeyDto, XApiKey>(mapperConfigurationExp);
             result = await EnrichAsync(
                 source: result,
                 cancellationToken: cancellationToken
@@ -88,7 +88,7 @@ namespace xIds.Providers
         )
         {
             //
-            var result = source.MapConvert<XApiKeyUsageDto, XApiKeyUsage>();
+            var result = source.MapConvert<XApiKeyUsageDto, XApiKeyUsage>(mapperConfigurationExp);
             result = await EnrichAsync(
                 source: result,
                 cancellationToken: cancellationToken
@@ -110,7 +110,7 @@ namespace xIds.Providers
         )
         {
             //
-            var result = source.MapConvert<XApplicationDto, XApplication>();
+            var result = source.MapConvert<XApplicationDto, XApplication>(mapperConfigurationExp);
             result = await EnrichAsync(
                 source: result,
                 cancellationToken: cancellationToken
diff --git a/appsettings.Development.json b/appsettings.Development.json
index de9781c..81fe6ce 100644
--- a/appsettings.Development.json
+++ b/appsettings.Development.json
@@ -37,12 +37,12 @@
     "MaxFileSize": 41943040
   },
   "ApiKeyConfiguration": {
-    "ApiPrefix": "xapp",
+    "ApiKeyPrefix": "xapp",
     "DefaultRateLimit": 60,
     "EnableAuditLog": false,
-    "MaxKeysPerApplication": "10",
-    "MaxExpirationMinutes": "525600",
-    "DefaultExpirationMinutes": "43200"
+    "MaxKeysPerApplication": 10,
+    "MaxExpirationMinutes": 525600,
+    "DefaultExpirationMinutes": 43200
   },
   "DbSeeder": {
     "UpdateExists": false,