diff --git a/frontend/pshared/lib/data/dto/payment/operation.dart b/frontend/pshared/lib/data/dto/payment/operation.dart
index 8a2365c4..42b0a106 100644
--- a/frontend/pshared/lib/data/dto/payment/operation.dart
+++ b/frontend/pshared/lib/data/dto/payment/operation.dart
@@ -1,6 +1,7 @@
 class PaymentOperationDTO {
   final String? stepRef;
   final String? operationRef;
+  final String? gateway;
   final String? code;
   final String? state;
   final String? label;
@@ -12,6 +13,7 @@ class PaymentOperationDTO {
   const PaymentOperationDTO({
     this.stepRef,
     this.operationRef,
+    this.gateway,
     this.code,
     this.state,
     this.label,
@@ -25,6 +27,7 @@ class PaymentOperationDTO {
       PaymentOperationDTO(
         stepRef: _asString(json['stepRef'] ?? json['step_ref']),
         operationRef: _asString(json['operationRef'] ?? json['operation_ref']),
+        gateway: _asString(json['gateway']),
         code: _asString(json['code']),
         state: _asString(json['state']),
         label: _asString(json['label']),
@@ -39,6 +42,7 @@ class PaymentOperationDTO {
   Map<String, dynamic> toJson() => <String, dynamic>{
     'stepRef': stepRef,
     'operationRef': operationRef,
+    'gateway': gateway,
     'code': code,
     'state': state,
     'label': label,
diff --git a/frontend/pshared/lib/data/mapper/payment/operation.dart b/frontend/pshared/lib/data/mapper/payment/operation.dart
index 5114d0c0..4ab8e3fd 100644
--- a/frontend/pshared/lib/data/mapper/payment/operation.dart
+++ b/frontend/pshared/lib/data/mapper/payment/operation.dart
@@ -1,11 +1,11 @@
 import 'package:pshared/data/dto/payment/operation.dart';
 import 'package:pshared/models/payment/execution_operation.dart';
 
-
 extension PaymentOperationDTOMapper on PaymentOperationDTO {
   PaymentExecutionOperation toDomain() => PaymentExecutionOperation(
     stepRef: stepRef,
     operationRef: operationRef,
+    gateway: gateway,
     code: code,
     state: state,
     label: label,
@@ -20,6 +20,7 @@ extension PaymentExecutionOperationMapper on PaymentExecutionOperation {
   PaymentOperationDTO toDTO() => PaymentOperationDTO(
     stepRef: stepRef,
     operationRef: operationRef,
+    gateway: gateway,
     code: code,
     state: state,
     label: label,
diff --git a/frontend/pshared/lib/models/payment/execution_operation.dart b/frontend/pshared/lib/models/payment/execution_operation.dart
index a2ef8b74..427f93da 100644
--- a/frontend/pshared/lib/models/payment/execution_operation.dart
+++ b/frontend/pshared/lib/models/payment/execution_operation.dart
@@ -1,6 +1,7 @@
 class PaymentExecutionOperation {
   final String? stepRef;
   final String? operationRef;
+  final String? gateway;
   final String? code;
   final String? state;
   final String? label;
@@ -12,6 +13,7 @@ class PaymentExecutionOperation {
   const PaymentExecutionOperation({
     required this.stepRef,
     required this.operationRef,
+    required this.gateway,
     required this.code,
     required this.state,
     required this.label,
diff --git a/frontend/pshared/lib/models/payment/operation.dart b/frontend/pshared/lib/models/payment/operation.dart
index 2beb03af..a8ba37b9 100644
--- a/frontend/pshared/lib/models/payment/operation.dart
+++ b/frontend/pshared/lib/models/payment/operation.dart
@@ -1,7 +1,6 @@
 import 'package:pshared/models/payment/methods/type.dart';
 import 'package:pshared/models/payment/status.dart';
 
-
 class OperationItem {
   final OperationStatus status;
   final String? fileName;
@@ -11,6 +10,8 @@ class OperationItem {
   final String toCurrency;
   final String payId;
   final String? paymentRef;
+  final String? operationRef;
+  final String? gatewayService;
   final String? cardNumber;
   final PaymentMethod? paymentMethod;
   final String name;
@@ -26,6 +27,8 @@ class OperationItem {
     required this.toCurrency,
     required this.payId,
     this.paymentRef,
+    this.operationRef,
+    this.gatewayService,
     this.cardNumber,
     this.paymentMethod,
     required this.name,
diff --git a/frontend/pshared/lib/service/payment/documents.dart b/frontend/pshared/lib/service/payment/documents.dart
index 8408927c..37c0b1df 100644
--- a/frontend/pshared/lib/service/payment/documents.dart
+++ b/frontend/pshared/lib/service/payment/documents.dart
@@ -8,27 +8,27 @@ class PaymentDocumentsService {
   static final _logger = Logger('service.payment_documents');
   static const String _objectType = Services.payments;
 
-  static Future<DownloadedFile> getAct(
+  static Future<DownloadedFile> getOperationDocument(
     String organizationRef,
-    String paymentRef, {
-    String? operationRef,
-  }) async {
-    final query = <String, String>{'payment_ref': paymentRef};
-    final operationRefValue = operationRef;
-    if (operationRefValue != null && operationRefValue.isNotEmpty) {
-      query['operation_ref'] = operationRefValue;
-      query['operationRef'] = operationRefValue;
-    }
+    String gatewayService,
+    String operationRef,
+  ) async {
+    final query = <String, String>{
+      'gateway_service': gatewayService,
+      'operation_ref': operationRef,
+    };
     final queryString = Uri(queryParameters: query).query;
-    final url = '/documents/act/$organizationRef?$queryString';
-    _logger.fine('Downloading act document for payment $paymentRef');
+    final url = '/documents/operation/$organizationRef?$queryString';
+    _logger.fine(
+      'Downloading operation document for operation $operationRef in gateway $gatewayService',
+    );
     final response = await AuthorizationService.getGETBinaryResponse(
       _objectType,
       url,
     );
     final filename =
         _filenameFromDisposition(response.header('content-disposition')) ??
-        'act_$paymentRef.pdf';
+        'operation_$operationRef.pdf';
     final mimeType = response.header('content-type') ?? 'application/pdf';
     return DownloadedFile(
       bytes: response.bytes,
diff --git a/frontend/pweb/lib/controllers/payments/details.dart b/frontend/pweb/lib/controllers/payments/details.dart
index 06d1e7ce..7f99a55e 100644
--- a/frontend/pweb/lib/controllers/payments/details.dart
+++ b/frontend/pweb/lib/controllers/payments/details.dart
@@ -26,9 +26,20 @@ class PaymentDetailsController extends ChangeNotifier {
   bool get canDownload {
     final current = _payment;
     if (current == null) return false;
-    final status = statusFromPayment(current);
-    final paymentRef = current.paymentRef ?? '';
-    return status == OperationStatus.success && paymentRef.trim().isNotEmpty;
+    if (statusFromPayment(current) != OperationStatus.success) return false;
+    return primaryOperationDocumentRequest != null;
+  }
+
+  OperationDocumentRequestModel? get primaryOperationDocumentRequest {
+    final current = _payment;
+    if (current == null) return null;
+    for (final operation in current.operations) {
+      final request = operationDocumentRequest(operation);
+      if (request != null) {
+        return request;
+      }
+    }
+    return null;
   }
 
   OperationDocumentRequestModel? operationDocumentRequest(
@@ -37,18 +48,17 @@ class PaymentDetailsController extends ChangeNotifier {
     final current = _payment;
     if (current == null) return null;
 
-    final paymentRef = current.paymentRef?.trim() ?? '';
-    if (paymentRef.isEmpty) return null;
-
     final operationRef = operation.operationRef;
     if (operationRef == null || operationRef.isEmpty) return null;
+    final gatewayService = operation.gateway;
+    if (gatewayService == null || gatewayService.isEmpty) return null;
 
     final pair = parseOperationCodePair(operation.code);
     if (pair == null) return null;
     if (pair.operation != 'card_payout' || pair.action != 'send') return null;
 
     return OperationDocumentRequestModel(
-      paymentRef: paymentRef,
+      gatewayService: gatewayService,
       operationRef: operationRef,
     );
   }
diff --git a/frontend/pweb/lib/models/documents/operation.dart b/frontend/pweb/lib/models/documents/operation.dart
index 6fbc1547..c669d04c 100644
--- a/frontend/pweb/lib/models/documents/operation.dart
+++ b/frontend/pweb/lib/models/documents/operation.dart
@@ -1,9 +1,9 @@
 class OperationDocumentRequestModel {
-  final String paymentRef;
+  final String gatewayService;
   final String operationRef;
 
   const OperationDocumentRequestModel({
-    required this.paymentRef,
+    required this.gatewayService,
     required this.operationRef,
   });
-}
\ No newline at end of file
+}
diff --git a/frontend/pweb/lib/models/report/operation/document.dart b/frontend/pweb/lib/models/report/operation/document.dart
new file mode 100644
index 00000000..9379305e
--- /dev/null
+++ b/frontend/pweb/lib/models/report/operation/document.dart
@@ -0,0 +1,9 @@
+class OperationDocumentInfo {
+  final String operationRef;
+  final String gatewayService;
+
+  const OperationDocumentInfo({
+    required this.operationRef,
+    required this.gatewayService,
+  });
+}
diff --git a/frontend/pweb/lib/pages/report/details/page.dart b/frontend/pweb/lib/pages/report/details/page.dart
index 5697c4c2..998d2b3b 100644
--- a/frontend/pweb/lib/pages/report/details/page.dart
+++ b/frontend/pweb/lib/pages/report/details/page.dart
@@ -65,7 +65,15 @@ class _PaymentDetailsView extends StatelessWidget {
             payment: payment,
             onBack: () => _handleBack(context),
             onDownloadAct: controller.canDownload
-                ? () => downloadPaymentAct(context, payment.paymentRef ?? '')
+                ? () {
+                    final request = controller.primaryOperationDocumentRequest;
+                    if (request == null) return;
+                    downloadPaymentAct(
+                      context,
+                      gatewayService: request.gatewayService,
+                      operationRef: request.operationRef,
+                    );
+                  }
                 : null,
             canDownloadOperationDocument:
                 controller.canDownloadOperationDocument,
@@ -74,7 +82,7 @@ class _PaymentDetailsView extends StatelessWidget {
               if (request == null) return;
               downloadPaymentAct(
                 context,
-                request.paymentRef,
+                gatewayService: request.gatewayService,
                 operationRef: request.operationRef,
               );
             },
diff --git a/frontend/pweb/lib/pages/report/table/row.dart b/frontend/pweb/lib/pages/report/table/row.dart
index a8797bc5..3ee87b52 100644
--- a/frontend/pweb/lib/pages/report/table/row.dart
+++ b/frontend/pweb/lib/pages/report/table/row.dart
@@ -9,7 +9,6 @@ import 'package:pweb/utils/report/download_act.dart';
 
 import 'package:pweb/generated/i18n/app_localizations.dart';
 
-
 class OperationRow {
   static DataRow build(OperationItem op, BuildContext context) {
     final isUnknownDate = op.date.millisecondsSinceEpoch == 0;
@@ -18,29 +17,37 @@ class OperationRow {
     final dateLabel = isUnknownDate
         ? '-'
         : '${TimeOfDay.fromDateTime(localDate).format(context)}\n'
-          '${localDate.toIso8601String().split("T").first}';
+              '${localDate.toIso8601String().split("T").first}';
 
-    final canDownload = op.status == OperationStatus.success &&
-        (op.paymentRef ?? '').trim().isNotEmpty;
+    final canDownload =
+        op.status == OperationStatus.success &&
+        (op.operationRef ?? '').trim().isNotEmpty &&
+        (op.gatewayService ?? '').trim().isNotEmpty;
 
     final documentCell = canDownload
         ? TextButton.icon(
-            onPressed: () => downloadPaymentAct(context, op.paymentRef ?? ''),
+            onPressed: () => downloadPaymentAct(
+              context,
+              gatewayService: op.gatewayService ?? '',
+              operationRef: op.operationRef ?? '',
+            ),
             icon: const Icon(Icons.download),
             label: Text(loc.downloadAct),
           )
         : Text(op.fileName ?? '');
 
-    return DataRow(cells: [
-      DataCell(OperationStatusBadge(status: op.status)),
-      DataCell(documentCell),
-      DataCell(Text('${amountToString(op.amount)} ${op.currency}')),
-      DataCell(Text('${amountToString(op.toAmount)} ${op.toCurrency}')),
-      DataCell(Text(op.payId)),
-      DataCell(Text(op.cardNumber ?? '-')),
-      DataCell(Text(op.name)),
-      DataCell(Text(dateLabel)),
-      DataCell(Text(op.comment)),
-    ]);
+    return DataRow(
+      cells: [
+        DataCell(OperationStatusBadge(status: op.status)),
+        DataCell(documentCell),
+        DataCell(Text('${amountToString(op.amount)} ${op.currency}')),
+        DataCell(Text('${amountToString(op.toAmount)} ${op.toCurrency}')),
+        DataCell(Text(op.payId)),
+        DataCell(Text(op.cardNumber ?? '-')),
+        DataCell(Text(op.name)),
+        DataCell(Text(dateLabel)),
+        DataCell(Text(op.comment)),
+      ],
+    );
   }
 }
diff --git a/frontend/pweb/lib/utils/report/download_act.dart b/frontend/pweb/lib/utils/report/download_act.dart
index d0e79c97..55e7b8ea 100644
--- a/frontend/pweb/lib/utils/report/download_act.dart
+++ b/frontend/pweb/lib/utils/report/download_act.dart
@@ -10,18 +10,18 @@ import 'package:pweb/utils/error/snackbar.dart';
 
 import 'package:pweb/generated/i18n/app_localizations.dart';
 
-
 Future<void> downloadPaymentAct(
-  BuildContext context,
-  String paymentRef, {
-  String? operationRef,
+  BuildContext context, {
+  required String gatewayService,
+  required String operationRef,
 }) async {
   final organizations = context.read<OrganizationsProvider>();
   if (!organizations.isOrganizationSet) {
     return;
   }
-  final trimmed = paymentRef.trim();
-  if (trimmed.isEmpty) {
+  final gateway = gatewayService.trim();
+  final operation = operationRef.trim();
+  if (gateway.isEmpty || operation.isEmpty) {
     return;
   }
 
@@ -29,10 +29,10 @@ Future<void> downloadPaymentAct(
   await executeActionWithNotification(
     context: context,
     action: () async {
-      final file = await PaymentDocumentsService.getAct(
+      final file = await PaymentDocumentsService.getOperationDocument(
         organizations.current.id,
-        trimmed,
-        operationRef: operationRef,
+        gateway,
+        operation,
       );
       await downloadFile(file);
     },
diff --git a/frontend/pweb/lib/utils/report/payment_mapper.dart b/frontend/pweb/lib/utils/report/payment_mapper.dart
index f76b2ad3..2e9a7e08 100644
--- a/frontend/pweb/lib/utils/report/payment_mapper.dart
+++ b/frontend/pweb/lib/utils/report/payment_mapper.dart
@@ -4,6 +4,9 @@ import 'package:pshared/models/payment/state.dart';
 import 'package:pshared/models/payment/status.dart';
 import 'package:pshared/utils/money.dart';
 
+import 'package:pweb/models/report/operation/document.dart';
+import 'package:pweb/utils/payment/operation_code.dart';
+
 
 OperationItem mapPaymentToOperation(Payment payment) {
   final debit = payment.lastQuote?.amounts?.sourceDebitTotal;
@@ -33,6 +36,7 @@ OperationItem mapPaymentToOperation(Payment payment) {
         payment.state,
       ]) ??
       '';
+  final operationDocument = _resolveOperationDocument(payment);
 
   return OperationItem(
     status: statusFromPayment(payment),
@@ -43,6 +47,8 @@ OperationItem mapPaymentToOperation(Payment payment) {
     toCurrency: toCurrency,
     payId: payId,
     paymentRef: payment.paymentRef,
+    operationRef: operationDocument?.operationRef,
+    gatewayService: operationDocument?.gatewayService,
     cardNumber: null,
     name: name,
     date: resolvePaymentDate(payment),
@@ -50,6 +56,25 @@ OperationItem mapPaymentToOperation(Payment payment) {
   );
 }
 
+OperationDocumentInfo? _resolveOperationDocument(Payment payment) {
+  for (final operation in payment.operations) {
+    final operationRef = operation.operationRef;
+    final gatewayService = operation.gateway;
+    if (operationRef == null || operationRef.isEmpty) continue;
+    if (gatewayService == null || gatewayService.isEmpty) continue;
+
+    final pair = parseOperationCodePair(operation.code);
+    if (pair == null) continue;
+    if (pair.operation != 'card_payout' || pair.action != 'send') continue;
+
+    return OperationDocumentInfo(
+      operationRef: operationRef,
+      gatewayService: gatewayService,
+    );
+  }
+  return null;
+}
+
 OperationStatus statusFromPayment(Payment payment) {
   switch (payment.orchestrationState) {
     case PaymentOrchestrationState.failed:
@@ -108,4 +133,4 @@ String? _firstNonEmpty(List<String?> values) {
     if (trimmed != null && trimmed.isNotEmpty) return trimmed;
   }
   return null;
-}
+}
\ No newline at end of file