diff --git a/resources/views/permohonan/authorization/show.blade.php b/resources/views/permohonan/authorization/show.blade.php
index 5580c35..02ad94d 100644
--- a/resources/views/permohonan/authorization/show.blade.php
+++ b/resources/views/permohonan/authorization/show.blade.php
@@ -157,7 +157,7 @@
         @include('lpj::component.detail-jaminan')
 
         <div class="card">
-            <form action="{{ route('authorization.update', $permohonan->id) }}" method="POST">
+            <form action="{{ route('authorization.update', $permohonan->id) }}" method="POST" id="authorizationForm">
                 <input type="hidden" name="_method" value="PUT">
                 @csrf
                 <div class="card-body lg:py-7.5">
@@ -167,6 +167,7 @@
                         </label>
                         <div class="flex flex-wrap items-baseline w-full">
                             <textarea class="textarea" rows="3" type="number" id="keterangan" name="keterangan"></textarea>
+                            <em class="alert text-danger text-sm" id="keterangan-message"></em>
                         </div>
                     </div>
                 </div>
@@ -174,7 +175,7 @@
                     <button type="submit" name="status" value="preregister" class="btn btn-success">
                         Approve
                     </button>
-                    <button type="submit" name="status" value="revisi" class="btn btn-warning ml-3">
+                    <button type="submit" name="status" value="revisi" id="revisi" class="btn btn-warning ml-3">
                         Revisi
                     </button>
                 </div>
@@ -182,3 +183,28 @@
         </div>
     </div>
 @endsection
+
+@push('scripts')
+    <script>
+        document.addEventListener('DOMContentLoaded', function() {
+            const form = document.getElementById('authorizationForm');
+            const keterangan = document.getElementById('keterangan');
+            const revisiBtn = document.getElementById('revisi');
+            const keteranganMessage = document.getElementById('keterangan-message');
+
+            form.addEventListener('submit', function(event) {
+                if (event.submitter === revisiBtn && keterangan.value.trim() === '') {
+                    event.preventDefault();
+                    keteranganMessage.textContent = 'Catatan harus diisi.';
+                } else {
+                    keteranganMessage.textContent = '';
+                }
+            });
+
+            // Add event listener for typing in keterangan textarea
+            keterangan.addEventListener('input', function() {
+                keteranganMessage.classList.add('hidden');
+            });
+        });
+    </script>
+@endpush