diff --git a/resources/views/operasi/edit_marginmutu.blade.php b/resources/views/operasi/edit_marginmutu.blade.php
index c9508ee..2af31e0 100644
--- a/resources/views/operasi/edit_marginmutu.blade.php
+++ b/resources/views/operasi/edit_marginmutu.blade.php
@@ -43,7 +43,7 @@
                         
                         <div class="form-group">
                             <label for="operasi">Operasi (%)</label>
-                            <input type="number" step="0.01" class="form-control" id="operasi" name="operasi" required>
+                            <input readonly type="number" step="0.01" class="form-control" id="operasi" name="operasi" required>
                         </div>
                         
                         <div class="text-center">
@@ -97,7 +97,7 @@ $(document).ready(function() {
                     });
                 } else {
                     Swal.fire({
-                        title: 'Error!',
+                        title: 'Ralat!',
                         text: response.message,
                         icon: 'error',
                         confirmButtonText: 'OK'
@@ -105,9 +105,31 @@ $(document).ready(function() {
                 }
             },
             error: function(xhr) {
+                let errorMessage = 'Error updating data';
+                
+                try {
+                    let response = JSON.parse(xhr.responseText);
+                    
+                    // If validation errors exist, show them
+                    if (response.errors) {
+                        let errorMessages = [];
+                        Object.keys(response.errors).forEach(function(key) {
+                            response.errors[key].forEach(function(error) {
+                                errorMessages.push(error);
+                            });
+                        });
+                        errorMessage = errorMessages.join('\n');
+                    } else if (response.message) {
+                        errorMessage = response.message;
+                    }
+                } catch (e) {
+                    // If JSON parsing fails, use the raw responseText
+                    errorMessage = xhr.responseText || 'Unknown error occurred';
+                }
+                
                 Swal.fire({
-                    title: 'Error!',
-                    text: 'Error updating data: ' + xhr.responseText,
+                    title: 'Ralat!',
+                    text: errorMessage,
                     icon: 'error',
                     confirmButtonText: 'OK'
                 });