diff --git a/IRaCIS.Core.API/Controllers/ExtraController.cs b/IRaCIS.Core.API/Controllers/ExtraController.cs
index 4933a95d8..f737fa776 100644
--- a/IRaCIS.Core.API/Controllers/ExtraController.cs
+++ b/IRaCIS.Core.API/Controllers/ExtraController.cs
@@ -203,7 +203,7 @@ namespace IRaCIS.Api.Controllers
 
             if (!await _useRepository.AnyAsync(t => t.Id == Guid.Parse(userId) && t.EmailToken == token && t.IsFirstAdd))
             {
-                decodeUrl = errorUrl + $"?lang={lang}&ErrorMessage={System.Web.HttpUtility.UrlEncode(lang == "zh" ? "您的初始化链接已过期" : "Error！The initialization link has expired.    Return")} ";
+                decodeUrl = errorUrl + $"?lang={lang}&ErrorMessage={System.Web.HttpUtility.UrlEncode(lang == "zh" ? "您的初始化链接已过期" : "Error！The initialization link has expired.")} ";
             }
 
             return Redirect(decodeUrl);
diff --git a/IRaCIS.Core.Application/Service/TrialSiteUser/TrialSiteService.cs b/IRaCIS.Core.Application/Service/TrialSiteUser/TrialSiteService.cs
index f131d5625..8ca70d2cb 100644
--- a/IRaCIS.Core.Application/Service/TrialSiteUser/TrialSiteService.cs
+++ b/IRaCIS.Core.Application/Service/TrialSiteUser/TrialSiteService.cs
@@ -169,6 +169,12 @@ namespace IRaCIS.Core.Application.Services
                 {
                     item.EnabledTime = DateTime.Now;
                 }
+
+                if (await _trialSiteRepository.AnyAsync(t => t.TrialSiteCode == item.TrialSiteCode && t.TrialId == item.TrialId))
+                {
+                    //---Code is not allowed to be repeated
+                    return ResponseOutput.NotOk(_localizer["TrialSite_CodeDuplicate"]);
+                }
             }
 
             await _trialSiteRepository.AddRangeAsync(addArray);
diff --git a/IRaCIS.Core.Domain/Trial/Trial.cs b/IRaCIS.Core.Domain/Trial/Trial.cs
index 8577a27dd..f32bcb561 100644
--- a/IRaCIS.Core.Domain/Trial/Trial.cs
+++ b/IRaCIS.Core.Domain/Trial/Trial.cs
@@ -177,7 +177,7 @@ public partial class Trial : BaseFullDeleteAuditEntity
 
     [MaxLength]
     public string BodyPartTypes { get; set; } = "鼻咽部|脑部|颈部|胸部|上/下腹部|盆腔|全身|其他";
-    public string Modalitys { get; set; } = string.Empty;
+    public string Modalitys { get; set; } = "CT|MRI";
 
     [NotMapped]
     public List<string> ModalityList => Modalitys.Split('|', StringSplitOptions.RemoveEmptyEntries).Where(t => !string.IsNullOrEmpty(t)).ToList();