diff --git a/BTCPayServer.Abstractions/Constants/WellKnownTempData.cs b/BTCPayServer.Abstractions/Constants/WellKnownTempData.cs
new file mode 100644
index 000000000..cf14678db
--- /dev/null
+++ b/BTCPayServer.Abstractions/Constants/WellKnownTempData.cs
@@ -0,0 +1,7 @@
+namespace BTCPayServer.Abstractions.Constants;
+
+public class WellKnownTempData
+{
+    public const string SuccessMessage = nameof(SuccessMessage);
+    public const string ErrorMessage = nameof(ErrorMessage);
+}
diff --git a/BTCPayServer.Tests/UnitTest1.cs b/BTCPayServer.Tests/UnitTest1.cs
index 1a35d123f..24497270f 100644
--- a/BTCPayServer.Tests/UnitTest1.cs
+++ b/BTCPayServer.Tests/UnitTest1.cs
@@ -11,6 +11,7 @@ using System.Text;
 using System.Text.RegularExpressions;
 using System.Threading;
 using System.Threading.Tasks;
+using BTCPayServer.Abstractions.Constants;
 using BTCPayServer.Abstractions.Contracts;
 using BTCPayServer.Abstractions.Models;
 using BTCPayServer.Client;
diff --git a/BTCPayServer/Controllers/UIAppsController.PointOfSale.cs b/BTCPayServer/Controllers/UIAppsController.PointOfSale.cs
index bf652f2a7..c9898f3d0 100644
--- a/BTCPayServer/Controllers/UIAppsController.PointOfSale.cs
+++ b/BTCPayServer/Controllers/UIAppsController.PointOfSale.cs
@@ -5,6 +5,7 @@ using System.Text;
 using System.Text.Encodings.Web;
 using System.Text.RegularExpressions;
 using System.Threading.Tasks;
+using BTCPayServer.Abstractions.Constants;
 using BTCPayServer.Models.AppViewModels;
 using BTCPayServer.Services.Apps;
 using Microsoft.AspNetCore.Mvc;
diff --git a/BTCPayServer/Controllers/UIServerController.Users.cs b/BTCPayServer/Controllers/UIServerController.Users.cs
index 4fab1ce0a..0c2f67964 100644
--- a/BTCPayServer/Controllers/UIServerController.Users.cs
+++ b/BTCPayServer/Controllers/UIServerController.Users.cs
@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
 using System.Linq;
 using System.Threading.Tasks;
+using BTCPayServer.Abstractions.Constants;
 using BTCPayServer.Abstractions.Extensions;
 using BTCPayServer.Abstractions.Models;
 using BTCPayServer.Data;
diff --git a/BTCPayServer/Controllers/UIServerController.cs b/BTCPayServer/Controllers/UIServerController.cs
index 8bf0866d4..99d55cc9d 100644
--- a/BTCPayServer/Controllers/UIServerController.cs
+++ b/BTCPayServer/Controllers/UIServerController.cs
@@ -9,6 +9,7 @@ using System.Net;
 using System.Net.Http;
 using System.Net.Mail;
 using System.Threading.Tasks;
+using BTCPayServer.Abstractions.Constants;
 using BTCPayServer.Abstractions.Extensions;
 using BTCPayServer.Abstractions.Models;
 using BTCPayServer.Configuration;
diff --git a/BTCPayServer/Controllers/UIStoresController.Email.cs b/BTCPayServer/Controllers/UIStoresController.Email.cs
index 6ecaeb3fc..82f590c70 100644
--- a/BTCPayServer/Controllers/UIStoresController.Email.cs
+++ b/BTCPayServer/Controllers/UIStoresController.Email.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Net.Mail;
 using System.Threading.Tasks;
+using BTCPayServer.Abstractions.Constants;
 using BTCPayServer.Data;
 using BTCPayServer.Models.ServerViewModels;
 using BTCPayServer.Services.Mails;
diff --git a/BTCPayServer/Controllers/UIStoresController.Integrations.cs b/BTCPayServer/Controllers/UIStoresController.Integrations.cs
index f46ba076c..fc3553028 100644
--- a/BTCPayServer/Controllers/UIStoresController.Integrations.cs
+++ b/BTCPayServer/Controllers/UIStoresController.Integrations.cs
@@ -2,6 +2,7 @@
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
+using BTCPayServer.Abstractions.Constants;
 using BTCPayServer.Client.Models;
 using BTCPayServer.Data;
 using BTCPayServer.Models;
diff --git a/BTCPayServer/Controllers/UIStoresController.LightningLike.cs b/BTCPayServer/Controllers/UIStoresController.LightningLike.cs
index d0a245359..351402b38 100644
--- a/BTCPayServer/Controllers/UIStoresController.LightningLike.cs
+++ b/BTCPayServer/Controllers/UIStoresController.LightningLike.cs
@@ -3,6 +3,7 @@ using System;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
+using BTCPayServer.Abstractions.Constants;
 using BTCPayServer.Configuration;
 using BTCPayServer.Data;
 using BTCPayServer.Lightning;
diff --git a/BTCPayServer/Controllers/UIStoresController.Onchain.cs b/BTCPayServer/Controllers/UIStoresController.Onchain.cs
index d8498f3dd..f0084cc78 100644
--- a/BTCPayServer/Controllers/UIStoresController.Onchain.cs
+++ b/BTCPayServer/Controllers/UIStoresController.Onchain.cs
@@ -4,6 +4,7 @@ using System.Linq;
 using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
+using BTCPayServer.Abstractions.Constants;
 using BTCPayServer.Abstractions.Extensions;
 using BTCPayServer.Abstractions.Models;
 using BTCPayServer.Data;
diff --git a/BTCPayServer/Controllers/UIWalletsController.PSBT.cs b/BTCPayServer/Controllers/UIWalletsController.PSBT.cs
index a4009f358..5d3f4aa42 100644
--- a/BTCPayServer/Controllers/UIWalletsController.PSBT.cs
+++ b/BTCPayServer/Controllers/UIWalletsController.PSBT.cs
@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Threading;
 using System.Threading.Tasks;
+using BTCPayServer.Abstractions.Constants;
 using BTCPayServer.Abstractions.Extensions;
 using BTCPayServer.Abstractions.Models;
 using BTCPayServer.BIP78.Sender;
diff --git a/BTCPayServer/Extensions.cs b/BTCPayServer/Extensions.cs
index 656afc1b6..2c0f07f19 100644
--- a/BTCPayServer/Extensions.cs
+++ b/BTCPayServer/Extensions.cs
@@ -11,6 +11,7 @@ using System.Security.Claims;
 using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
+using BTCPayServer.Abstractions.Constants;
 using BTCPayServer.Abstractions.Models;
 using BTCPayServer.BIP78.Sender;
 using BTCPayServer.Configuration;
diff --git a/BTCPayServer/WellKnownTempData.cs b/BTCPayServer/WellKnownTempData.cs
deleted file mode 100644
index e3ac4f9ab..000000000
--- a/BTCPayServer/WellKnownTempData.cs
+++ /dev/null
@@ -1,8 +0,0 @@
-namespace BTCPayServer
-{
-    public class WellKnownTempData
-    {
-        public const string SuccessMessage = nameof(SuccessMessage);
-        public const string ErrorMessage = nameof(ErrorMessage);
-    }
-}