diff --git a/src/pages/Form16/Form16SubmissionResult.tsx b/src/pages/Form16/Form16SubmissionResult.tsx
index 3ccd171..c989be6 100644
--- a/src/pages/Form16/Form16SubmissionResult.tsx
+++ b/src/pages/Form16/Form16SubmissionResult.tsx
@@ -65,7 +65,8 @@ export function Form16SubmissionResult() {
   return (
     <RequestSubmissionSuccess
       status={result.status}
-      requestId={result.requestNumber ?? result.requestId}
+      requestId={result.requestId}
+      requestDisplayId={result.requestNumber ?? result.requestId}
       creditNoteNumber={result.creditNoteNumber}
       message={result.message}
       onComplete={onComplete}
diff --git a/src/pages/Form16/components/RequestSubmissionSuccess.tsx b/src/pages/Form16/components/RequestSubmissionSuccess.tsx
index 9e37128..d349e3b 100644
--- a/src/pages/Form16/components/RequestSubmissionSuccess.tsx
+++ b/src/pages/Form16/components/RequestSubmissionSuccess.tsx
@@ -13,7 +13,10 @@ export type SubmissionResultStatus = 'success' | 'mismatch' | 'duplicate' | 'err
 interface RequestSubmissionSuccessProps {
   /** 'success' = matched & credit note; 'mismatch' = value mismatch; 'duplicate' = already submitted; 'error' = request received / processing */
   status: SubmissionResultStatus;
+  /** Internal UUID requestId (used for API actions like contact-admin). */
   requestId: string;
+  /** Human-readable request number shown in UI. */
+  requestDisplayId?: string;
   creditNoteNumber?: string | null;
   /** Optional message (e.g. from API or error) */
   message?: string | null;
@@ -26,6 +29,7 @@ interface RequestSubmissionSuccessProps {
 export function RequestSubmissionSuccess({
   status,
   requestId,
+  requestDisplayId,
   creditNoteNumber,
   message,
   onComplete,
@@ -35,6 +39,16 @@ export function RequestSubmissionSuccess({
   const isSuccess = status === 'success';
   const isMismatch = status === 'mismatch';
   const isMissing26AsMismatch = isMismatch && (message || '').toLowerCase().includes('26as') && (message || '').toLowerCase().includes('no 26as');
+  const mismatchSummary = (() => {
+    const m = (message || '').toLowerCase();
+    if (m.includes('no 26as')) return '26AS data is not uploaded for this TAN / FY / Quarter.';
+    if (m.includes('amount mismatch')) return 'TDS amount in Form 16A does not match 26AS amount.';
+    if (m.includes('tan')) return 'TAN details in Form 16A do not match 26AS records.';
+    if (m.includes('pan')) return 'PAN details in Form 16A do not match 26AS records.';
+    if (m.includes('quarter')) return 'Quarter in Form 16A does not match 26AS records.';
+    if (m.includes('financial year') || m.includes('fy')) return 'Financial year in Form 16A does not match 26AS records.';
+    return 'Form 16A details do not match with 26AS data.';
+  })();
 
   const onContactAdmin = async () => {
     try {
@@ -165,8 +179,7 @@ export function RequestSubmissionSuccess({
                     Resubmit the form carefully.
                   </p>
                   <p className="text-gray-600 text-sm mt-1">
-                    Form 16A details did not match with 26AS data. Please verify the certificate and
-                    resubmit with correct details.
+                    {mismatchSummary} Please verify the certificate and resubmit with correct details.
                   </p>
                   {message && (
                     <div className="mt-3 p-3 bg-amber-50 border border-amber-200 rounded-md">
@@ -210,7 +223,7 @@ export function RequestSubmissionSuccess({
               }`}
             >
               <p className={`text-sm mb-1 ${isDuplicate ? 'text-red-700' : 'text-gray-600'}`}>Request ID</p>
-              <p className={`font-mono tracking-wide ${isDuplicate ? 'text-red-800 font-semibold' : 'text-gray-900'}`}>{requestId || '—'}</p>
+              <p className={`font-mono tracking-wide ${isDuplicate ? 'text-red-800 font-semibold' : 'text-gray-900'}`}>{requestDisplayId || requestId || '—'}</p>
               {isSuccess && creditNoteNumber && (
                 <>
                   <p className="text-sm text-gray-600 mt-3 mb-1">Credit Note Number</p>