diff --git a/TaxBaik.Web/Components/Admin/Pages/CommonCodes.razor b/TaxBaik.Web/Components/Admin/Pages/CommonCodes.razor
index 92364dc..bbd2f57 100644
--- a/TaxBaik.Web/Components/Admin/Pages/CommonCodes.razor
+++ b/TaxBaik.Web/Components/Admin/Pages/CommonCodes.razor
@@ -87,7 +87,25 @@
 
     private async Task SaveCode()
     {
-        if (editModel.CodeValue.Contains(' '))
+        editModel.CodeGroup = editModel.CodeGroup?.Trim() ?? string.Empty;
+        editModel.CodeValue = editModel.CodeValue?.Trim() ?? string.Empty;
+        editModel.CodeName = editModel.CodeName?.Trim() ?? string.Empty;
+
+        if (string.IsNullOrWhiteSpace(editModel.CodeGroup) ||
+            string.IsNullOrWhiteSpace(editModel.CodeValue) ||
+            string.IsNullOrWhiteSpace(editModel.CodeName))
+        {
+            Snackbar.Add("그룹, 값, 이름은 모두 입력해야 합니다.", Severity.Error);
+            return;
+        }
+
+        if (editModel.CodeGroup.Any(char.IsWhiteSpace))
+        {
+            Snackbar.Add("code_group에는 공백을 넣을 수 없습니다.", Severity.Error);
+            return;
+        }
+
+        if (editModel.CodeValue.Any(char.IsWhiteSpace))
         {
             Snackbar.Add("code_value에는 공백을 넣을 수 없습니다.", Severity.Error);
             return;
diff --git a/TaxBaik.Web/Components/Admin/Shared/CommonCodeListPanel.razor b/TaxBaik.Web/Components/Admin/Shared/CommonCodeListPanel.razor
index 457e07a..ca302c7 100644
--- a/TaxBaik.Web/Components/Admin/Shared/CommonCodeListPanel.razor
+++ b/TaxBaik.Web/Components/Admin/Shared/CommonCodeListPanel.razor
@@ -27,9 +27,9 @@
 
     <AdminFormSection Title="코드 편집" Description="공백 없는 값과 일관된 이름만 허용합니다.">
         <MudForm>
-            <MudTextField @bind-Value="EditModel.CodeGroup" Label="그룹" Variant="Variant.Outlined" FullWidth="true" Required="true" Disabled="@(!IsCreateMode)" Class="mb-3" />
-            <MudTextField @bind-Value="EditModel.CodeValue" Label="값" Variant="Variant.Outlined" FullWidth="true" Required="true" Disabled="@(!IsCreateMode)" Class="mb-3" />
-            <MudTextField @bind-Value="EditModel.CodeName" Label="이름" Variant="Variant.Outlined" FullWidth="true" Required="true" Class="mb-3" />
+            <MudTextField @bind-Value="EditModel.CodeGroup" Label="그룹" Variant="Variant.Outlined" FullWidth="true" Required="true" Disabled="@(!IsCreateMode)" MaxLength="80" Class="mb-3" />
+            <MudTextField @bind-Value="EditModel.CodeValue" Label="값" Variant="Variant.Outlined" FullWidth="true" Required="true" Disabled="@(!IsCreateMode)" MaxLength="120" Class="mb-3" />
+            <MudTextField @bind-Value="EditModel.CodeName" Label="이름" Variant="Variant.Outlined" FullWidth="true" Required="true" MaxLength="200" Class="mb-3" />
             <MudNumericField T="int" @bind-Value="EditModel.SortOrder" Label="순서" Variant="Variant.Outlined" FullWidth="true" Class="mb-3" />
             <MudSwitch @bind-Checked="EditModel.IsActive" Color="Color.Primary">활성</MudSwitch>
             <div class="d-flex gap-2 mt-4">