diff --git a/sharing/BUILD b/sharing/BUILD
index 8174e52b..3ef0c9bd 100644
--- a/sharing/BUILD
+++ b/sharing/BUILD
@@ -67,12 +67,10 @@ cc_library(
     name = "types",
     srcs = [
         "advertisement.cc",
-        "attachment_info.cc",
         "share_target.cc",
     ],
     hdrs = [
         "advertisement.h",
-        "attachment_info.h",
         "constants.h",
         "nearby_connection.h",
         "nearby_connections_manager.h",
diff --git a/sharing/attachment_info.cc b/sharing/attachment_info.cc
deleted file mode 100644
index e2d3c056..00000000
--- a/sharing/attachment_info.cc
+++ /dev/null
@@ -1,27 +0,0 @@
-// Copyright 2022 Google LLC
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     https://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#include "sharing/attachment_info.h"
-
-namespace nearby::sharing {
-
-AttachmentInfo::AttachmentInfo() = default;
-AttachmentInfo::~AttachmentInfo() = default;
-
-AttachmentInfo::AttachmentInfo(const AttachmentInfo&) = default;
-AttachmentInfo& AttachmentInfo::operator=(const AttachmentInfo&) = default;
-AttachmentInfo::AttachmentInfo(AttachmentInfo&&) = default;
-AttachmentInfo& AttachmentInfo::operator=(AttachmentInfo&&) = default;
-
-}  // namespace nearby::sharing
diff --git a/sharing/attachment_info.h b/sharing/attachment_info.h
deleted file mode 100644
index eabdd91d..00000000
--- a/sharing/attachment_info.h
+++ /dev/null
@@ -1,43 +0,0 @@
-// Copyright 2022 Google LLC
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//     https://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-#ifndef THIRD_PARTY_NEARBY_SHARING_ATTACHMENT_INFO_H_
-#define THIRD_PARTY_NEARBY_SHARING_ATTACHMENT_INFO_H_
-
-#include <stdint.h>
-
-#include <filesystem>  // NOLINT(build/c++17)
-#include <optional>
-#include <string>
-
-namespace nearby::sharing {
-
-// Ties associated information to an Attachment.
-struct AttachmentInfo {
-  AttachmentInfo();
-  ~AttachmentInfo();
-
-  AttachmentInfo(const AttachmentInfo&);
-  AttachmentInfo& operator=(const AttachmentInfo&);
-  AttachmentInfo(AttachmentInfo&&);
-  AttachmentInfo& operator=(AttachmentInfo&&);
-
-  std::optional<int64_t> payload_id;
-  std::string text_body;
-  std::filesystem::path file_path;
-};
-
-}  // namespace nearby::sharing
-
-#endif  // THIRD_PARTY_NEARBY_SHARING_ATTACHMENT_INFO_H_
diff --git a/sharing/fake_nearby_connections_manager.cc b/sharing/fake_nearby_connections_manager.cc
index fcc9bab2..7d01c1b0 100644
--- a/sharing/fake_nearby_connections_manager.cc
+++ b/sharing/fake_nearby_connections_manager.cc
@@ -139,7 +139,8 @@ void FakeNearbyConnectionsManager::RegisterPayloadStatusListener(
   payload_status_listeners_[payload_id] = listener;
 }
 
-Payload* FakeNearbyConnectionsManager::GetIncomingPayload(int64_t payload_id) {
+const Payload* FakeNearbyConnectionsManager::GetIncomingPayload(
+    int64_t payload_id) const {
   NL_DCHECK(!is_shutdown());
   absl::MutexLock lock(&incoming_payloads_mutex_);
   auto it = incoming_payloads_.find(payload_id);
diff --git a/sharing/fake_nearby_connections_manager.h b/sharing/fake_nearby_connections_manager.h
index 2a4bea22..23fbce3d 100644
--- a/sharing/fake_nearby_connections_manager.h
+++ b/sharing/fake_nearby_connections_manager.h
@@ -66,7 +66,7 @@ class FakeNearbyConnectionsManager : public NearbyConnectionsManager {
   void RegisterPayloadStatusListener(
       int64_t payload_id,
       std::weak_ptr<PayloadStatusListener> listener) override;
-  Payload* GetIncomingPayload(int64_t payload_id) override;
+  const Payload* GetIncomingPayload(int64_t payload_id) const override;
   void Cancel(int64_t payload_id) override;
   void ClearIncomingPayloads() override;
   std::optional<std::vector<uint8_t>> GetRawAuthenticationToken(
@@ -171,7 +171,7 @@ class FakeNearbyConnectionsManager : public NearbyConnectionsManager {
 
   std::map<int64_t, std::weak_ptr<PayloadStatusListener>>
       payload_status_listeners_;
-  absl::Mutex incoming_payloads_mutex_;
+  mutable absl::Mutex incoming_payloads_mutex_;
   std::map<int64_t, std::unique_ptr<Payload>> incoming_payloads_
       ABSL_GUARDED_BY(incoming_payloads_mutex_);
   absl::flat_hash_set<std::filesystem::path> file_paths_to_delete_;
diff --git a/sharing/incoming_share_target_info_test.cc b/sharing/incoming_share_target_info_test.cc
index 313aa5f1..676a0c5d 100644
--- a/sharing/incoming_share_target_info_test.cc
+++ b/sharing/incoming_share_target_info_test.cc
@@ -180,17 +180,17 @@ TEST_F(IncomingShareTargetInfoTest, ProcessIntroductionSuccess) {
               UnorderedElementsAre(text1, text2));
   EXPECT_THAT(info_.attachment_container().GetWifiCredentialsAttachments(),
               UnorderedElementsAre(wifi1, wifi2));
-  EXPECT_THAT(info_.attachment_payload_map().at(filemeta1.id()).payload_id,
+  EXPECT_THAT(info_.attachment_payload_map().at(filemeta1.id()),
               Eq(filemeta1.payload_id()));
-  EXPECT_THAT(info_.attachment_payload_map().at(filemeta2.id()).payload_id,
+  EXPECT_THAT(info_.attachment_payload_map().at(filemeta2.id()),
               Eq(filemeta2.payload_id()));
-  EXPECT_THAT(info_.attachment_payload_map().at(textmeta1.id()).payload_id,
+  EXPECT_THAT(info_.attachment_payload_map().at(textmeta1.id()),
               Eq(textmeta1.payload_id()));
-  EXPECT_THAT(info_.attachment_payload_map().at(textmeta2.id()).payload_id,
+  EXPECT_THAT(info_.attachment_payload_map().at(textmeta2.id()),
               Eq(textmeta2.payload_id()));
-  EXPECT_THAT(info_.attachment_payload_map().at(wifimeta1.id()).payload_id,
+  EXPECT_THAT(info_.attachment_payload_map().at(wifimeta1.id()),
               Eq(wifimeta1.payload_id()));
-  EXPECT_THAT(info_.attachment_payload_map().at(wifimeta2.id()).payload_id,
+  EXPECT_THAT(info_.attachment_payload_map().at(wifimeta2.id()),
               Eq(wifimeta2.payload_id()));
 }
 }  // namespace
diff --git a/sharing/nearby_connections_manager.h b/sharing/nearby_connections_manager.h
index 12462b34..b6fc5ab5 100644
--- a/sharing/nearby_connections_manager.h
+++ b/sharing/nearby_connections_manager.h
@@ -143,7 +143,7 @@ class NearbyConnectionsManager {
       int64_t payload_id, std::weak_ptr<PayloadStatusListener> listener) = 0;
 
   // Gets the payload associated with `payload_id` if available.
-  virtual Payload* GetIncomingPayload(int64_t payload_id) = 0;
+  virtual const Payload* GetIncomingPayload(int64_t payload_id) const = 0;
 
   // Cancels a Payload currently in-flight to or from remote endpoints.
   virtual void Cancel(int64_t payload_id) = 0;
diff --git a/sharing/nearby_connections_manager_impl.cc b/sharing/nearby_connections_manager_impl.cc
index ef8cfff0..cfcbb4ba 100644
--- a/sharing/nearby_connections_manager_impl.cc
+++ b/sharing/nearby_connections_manager_impl.cc
@@ -554,9 +554,10 @@ void NearbyConnectionsManagerImpl::RegisterPayloadStatusListener(
   payload_status_listeners_.insert_or_assign(payload_id, listener);
 }
 
-Payload* NearbyConnectionsManagerImpl::GetIncomingPayload(int64_t payload_id) {
+const Payload* NearbyConnectionsManagerImpl::GetIncomingPayload(
+    int64_t payload_id) const {
   MutexLock lock(&mutex_);
-  auto it = incoming_payloads_.find(payload_id);
+  const auto it = incoming_payloads_.find(payload_id);
   if (it == incoming_payloads_.end()) return nullptr;
 
   return &it->second;
diff --git a/sharing/nearby_connections_manager_impl.h b/sharing/nearby_connections_manager_impl.h
index 409cee38..5fbce33f 100644
--- a/sharing/nearby_connections_manager_impl.h
+++ b/sharing/nearby_connections_manager_impl.h
@@ -78,7 +78,7 @@ class NearbyConnectionsManagerImpl : public NearbyConnectionsManager {
   void RegisterPayloadStatusListener(
       int64_t payload_id,
       std::weak_ptr<PayloadStatusListener> listener) override;
-  Payload* GetIncomingPayload(int64_t payload_id) override;
+  const Payload* GetIncomingPayload(int64_t payload_id) const override;
   void Cancel(int64_t payload_id) override;
   void ClearIncomingPayloads() override;
   std::optional<std::vector<uint8_t>> GetRawAuthenticationToken(
diff --git a/sharing/nearby_connections_manager_impl_test.cc b/sharing/nearby_connections_manager_impl_test.cc
index 57361647..79e54e45 100644
--- a/sharing/nearby_connections_manager_impl_test.cc
+++ b/sharing/nearby_connections_manager_impl_test.cc
@@ -1427,7 +1427,7 @@ TEST_F(NearbyConnectionsManagerImplTest, IncomingBytesPayload) {
   EXPECT_TRUE(payload_notification.WaitForNotificationWithTimeout(
       kSynchronizationTimeOut));
 
-  Payload* payload =
+  const Payload* payload =
       nearby_connections_manager_->GetIncomingPayload(kPayloadId);
   ASSERT_NE(payload, nullptr);
   ASSERT_TRUE(payload->content.is_bytes());
@@ -1472,7 +1472,7 @@ TEST_F(NearbyConnectionsManagerImplTest, IncomingFilePayload) {
   EXPECT_TRUE(payload_notification.WaitForNotificationWithTimeout(
       kSynchronizationTimeOut));
 
-  Payload* payload =
+  const Payload* payload =
       nearby_connections_manager_->GetIncomingPayload(kPayloadId);
   ASSERT_NE(payload, nullptr);
   ASSERT_TRUE(payload->content.is_file());
diff --git a/sharing/nearby_connections_types.h b/sharing/nearby_connections_types.h
index 6b60579c..6b13694c 100644
--- a/sharing/nearby_connections_types.h
+++ b/sharing/nearby_connections_types.h
@@ -420,9 +420,9 @@ struct PayloadContent {
   FilePayload file_payload;
   enum class Type { kUnknown = 0, kBytes = 1, kStream = 2, kFile = 3 };
   Type type;
-  bool is_bytes() { return type == Type::kBytes; }
-  bool is_file() { return type == Type::kFile; }
-  bool is_stream() { return type == Type::kStream; }
+  bool is_bytes() const { return type == Type::kBytes; }
+  bool is_file() const { return type == Type::kFile; }
+  bool is_stream() const { return type == Type::kStream; }
 };
 
 // A Payload sent between devices. Payloads sent with a particular content type
diff --git a/sharing/nearby_sharing_service_impl.cc b/sharing/nearby_sharing_service_impl.cc
index b7a72b42..a6855b63 100644
--- a/sharing/nearby_sharing_service_impl.cc
+++ b/sharing/nearby_sharing_service_impl.cc
@@ -54,7 +54,6 @@
 #include "sharing/analytics/analytics_information.h"
 #include "sharing/analytics/analytics_recorder.h"
 #include "sharing/attachment_container.h"
-#include "sharing/attachment_info.h"
 #include "sharing/certificates/common.h"
 #include "sharing/certificates/nearby_share_certificate_manager.h"
 #include "sharing/certificates/nearby_share_certificate_manager_impl.h"
@@ -353,7 +352,7 @@ void NearbySharingServiceImpl::Cleanup() {
 
   last_incoming_metadata_.reset();
   last_outgoing_metadata_.reset();
-  attachment_info_map_.clear();
+  attachment_payload_map_.clear();
   locally_cancelled_share_target_ids_.clear();
 
   mutual_acceptance_timeout_alarm_->Stop();
@@ -2547,11 +2546,6 @@ void NearbySharingServiceImpl::ReceivePayloads(
           << file.id();
       continue;
     }
-
-    std::filesystem::path file_path =
-        download_path / std::filesystem::u8path(file.file_name().cbegin(),
-                                                file.file_name().cend());
-    attachment_info_map_[file.id()].file_path = std::move(file_path);
   }
   OnPayloadPathsRegistered(share_target_info, std::move(status_codes_callback));
 }
@@ -2599,7 +2593,7 @@ void NearbySharingServiceImpl::OnPayloadPathsRegistered(
   int64_t share_target_id = info.share_target().id;
   info.set_payload_tracker(std::make_shared<PayloadTracker>(
       context_, share_target_id, info.attachment_container(),
-      attachment_info_map_,
+      attachment_payload_map_,
       absl::bind_front(&NearbySharingServiceImpl::OnPayloadTransferUpdate,
                        this)));
 
@@ -2794,7 +2788,7 @@ void NearbySharingServiceImpl::CreatePayloads(
                 return;
               }
               bool result = info->CreateFilePayloads(file_infos);
-              attachment_info_map_ = info->attachment_payload_map();
+              attachment_payload_map_ = info->attachment_payload_map();
               std::move(callback)(*info, result);
             });
       });
@@ -3378,7 +3372,7 @@ void NearbySharingServiceImpl::OnReceivedIntroduction(
     Fail(share_target_id, *status);
     return;
   }
-  attachment_info_map_ = info->attachment_payload_map();
+  attachment_payload_map_ = info->attachment_payload_map();
 
   // Log analytics event of receiving introduction.
   analytics_recorder_->NewReceiveIntroduction(
@@ -3474,7 +3468,7 @@ void NearbySharingServiceImpl::OnReceiveConnectionResponse(
 
       info->set_payload_tracker(std::make_unique<PayloadTracker>(
           context_, share_target_id, info->attachment_container(),
-          attachment_info_map_,
+          attachment_payload_map_,
           absl::bind_front(&NearbySharingServiceImpl::OnPayloadTransferUpdate,
                            this)));
 
@@ -3883,15 +3877,14 @@ bool NearbySharingServiceImpl::OnIncomingPayloadsComplete(
   AttachmentContainer& container = info->mutable_attachment_container();
   for (int i = 0; i < container.GetTextAttachments().size(); ++i) {
     TextAttachment& text = container.GetMutableTextAttachment(i);
-    AttachmentInfo& attachment_info = attachment_info_map_[text.id()];
-    std::optional<int64_t> payload_id = attachment_info.payload_id;
-    if (!payload_id) {
+    const auto it = attachment_payload_map_.find(text.id());
+    if (it == attachment_payload_map_.end()) {
       NL_LOG(WARNING) << __func__ << ": No payload id found for text - "
                       << text.id();
       return false;
     }
-    Payload* incoming_payload =
-        nearby_connections_manager_->GetIncomingPayload(*payload_id);
+    const Payload* incoming_payload =
+        nearby_connections_manager_->GetIncomingPayload(it->second);
     if (!incoming_payload || !incoming_payload->content.is_bytes()) {
       NL_LOG(WARNING) << __func__ << ": No payload found for text - "
                       << text.id();
@@ -3903,31 +3896,28 @@ bool NearbySharingServiceImpl::OnIncomingPayloadsComplete(
       NL_LOG(WARNING)
           << __func__
           << ": Incoming bytes is empty for text payload with payload_id - "
-          << *payload_id;
+          << it->second;
       return false;
     }
 
     std::string text_body(bytes.begin(), bytes.end());
     text.set_text_body(text_body);
-
-    attachment_info.text_body = std::move(text_body);
   }
 
   for (int i = 0; i < container.GetWifiCredentialsAttachments().size(); ++i) {
     WifiCredentialsAttachment& wifi_credentials_attachment =
         container.GetMutableWifiCredentialsAttachment(i);
-    AttachmentInfo& attachment_info =
-        attachment_info_map_[wifi_credentials_attachment.id()];
-    std::optional<int64_t> payload_id = attachment_info.payload_id;
-    if (!payload_id) {
+    const auto it =
+        attachment_payload_map_.find(wifi_credentials_attachment.id());
+    if (it == attachment_payload_map_.end()) {
       NL_LOG(WARNING) << __func__
                       << ": No payload id found for WiFi credentials - "
                       << wifi_credentials_attachment.id();
       return false;
     }
 
-    Payload* incoming_payload =
-        nearby_connections_manager_->GetIncomingPayload(*payload_id);
+    const Payload* incoming_payload =
+        nearby_connections_manager_->GetIncomingPayload(it->second);
     if (!incoming_payload || !incoming_payload->content.is_bytes()) {
       NL_LOG(WARNING) << __func__
                       << ": No payload found for WiFi credentials - "
@@ -3940,7 +3930,7 @@ bool NearbySharingServiceImpl::OnIncomingPayloadsComplete(
       NL_LOG(WARNING) << __func__
                       << ": Incoming bytes is empty for WiFi credentials "
                          "payload with payload_id - "
-                      << *payload_id;
+                      << it->second;
       return false;
     }
 
@@ -3950,7 +3940,7 @@ bool NearbySharingServiceImpl::OnIncomingPayloadsComplete(
       NL_LOG(WARNING) << __func__
                       << ": Incoming bytes is invalid for WiFi credentials "
                          "payload with payload_id - "
-                      << *payload_id;
+                      << it->second;
       return false;
     }
 
@@ -3969,16 +3959,15 @@ void NearbySharingServiceImpl::UpdateFilePath(
     if (file.file_path().has_value()) {
       continue;
     }
-    AttachmentInfo& attachment_info = attachment_info_map_[file.id()];
-    std::optional<int64_t> payload_id = attachment_info.payload_id;
-    if (!payload_id) {
+    const auto it = attachment_payload_map_.find(file.id());
+    if (it == attachment_payload_map_.end()) {
       NL_LOG(WARNING) << __func__ << ": No payload id found for file - "
                       << file.id();
       continue;
     }
 
-    Payload* incoming_payload =
-        nearby_connections_manager_->GetIncomingPayload(*payload_id);
+    const Payload* incoming_payload =
+        nearby_connections_manager_->GetIncomingPayload(it->second);
     if (!incoming_payload || !incoming_payload->content.is_file()) {
       NL_LOG(WARNING) << __func__ << ": No payload found for file - "
                       << file.id();
@@ -4015,7 +4004,8 @@ void NearbySharingServiceImpl::RemoveIncomingPayloads(
     auto file_path = *file.file_path();
     NL_VLOG(1) << __func__
                << ": file_path=" << GetCompatibleU8String(file_path.u8string());
-    if (attachment_info_map_.find(file.id()) == attachment_info_map_.end()) {
+    if (attachment_payload_map_.find(file.id()) ==
+        attachment_payload_map_.end()) {
       continue;
     }
     files_for_deletion.push_back(file_path);
@@ -4186,10 +4176,10 @@ void NearbySharingServiceImpl::ClearOutgoingShareTargetInfoMap() {
 
 std::optional<int64_t> NearbySharingServiceImpl::GetAttachmentPayloadId(
     int64_t attachment_id) {
-  auto it = attachment_info_map_.find(attachment_id);
-  if (it == attachment_info_map_.end()) return std::nullopt;
+  const auto it = attachment_payload_map_.find(attachment_id);
+  if (it == attachment_payload_map_.end()) return std::nullopt;
 
-  return it->second.payload_id;
+  return it->second;
 }
 
 void NearbySharingServiceImpl::UnregisterShareTarget(int64_t share_target_id) {
diff --git a/sharing/nearby_sharing_service_impl.h b/sharing/nearby_sharing_service_impl.h
index b7a11321..7e1ad266 100644
--- a/sharing/nearby_sharing_service_impl.h
+++ b/sharing/nearby_sharing_service_impl.h
@@ -45,7 +45,6 @@
 #include "sharing/advertisement.h"
 #include "sharing/analytics/analytics_recorder.h"
 #include "sharing/attachment_container.h"
-#include "sharing/attachment_info.h"
 #include "sharing/certificates/nearby_share_certificate_manager.h"
 #include "sharing/certificates/nearby_share_decrypted_public_certificate.h"
 #include "sharing/certificates/nearby_share_private_certificate.h"
@@ -580,9 +579,8 @@ class NearbySharingServiceImpl
   // unnecessary backend API call.
   absl::flat_hash_set<std::string> discovered_advertisements_retried_set_;
 
-  // A mapping of Attachment ID to additional AttachmentInfo related to the
-  // Attachment.
-  absl::flat_hash_map<int64_t, AttachmentInfo> attachment_info_map_;
+  // A mapping of Attachment ID to payload ID .
+  absl::flat_hash_map<int64_t, int64_t> attachment_payload_map_;
 
   // This alarm is used to disconnect the sharing connection if both sides do
   // not press accept within the timeout.
diff --git a/sharing/outgoing_share_target_info_test.cc b/sharing/outgoing_share_target_info_test.cc
index b5608441..07e3baa5 100644
--- a/sharing/outgoing_share_target_info_test.cc
+++ b/sharing/outgoing_share_target_info_test.cc
@@ -121,15 +121,9 @@ TEST_F(OutgoingShareTargetInfoTest, CreateTextPayloads) {
 
   ASSERT_THAT(attachment_payload_map, SizeIs(2));
   ASSERT_THAT(attachment_payload_map.contains(text1_.id()), IsTrue());
-  ASSERT_THAT(attachment_payload_map.at(text1_.id()).payload_id.has_value(),
-              IsTrue());
-  EXPECT_THAT(attachment_payload_map.at(text1_.id()).payload_id.value(),
-              Eq(payloads[0].id));
+  EXPECT_THAT(attachment_payload_map.at(text1_.id()), Eq(payloads[0].id));
   ASSERT_THAT(attachment_payload_map.contains(text2_.id()), IsTrue());
-  ASSERT_THAT(attachment_payload_map.at(text2_.id()).payload_id.has_value(),
-              IsTrue());
-  EXPECT_THAT(attachment_payload_map.at(text2_.id()).payload_id.value(),
-              Eq(payloads[1].id));
+  EXPECT_THAT(attachment_payload_map.at(text2_.id()), Eq(payloads[1].id));
 }
 
 TEST_F(OutgoingShareTargetInfoTest, CreateFilePayloadsWithNoFileAttachments) {
@@ -157,8 +151,8 @@ TEST_F(OutgoingShareTargetInfoTest, CreateFilePayloadsWithWrongFileInfo) {
 TEST_F(OutgoingShareTargetInfoTest, CreateFilePayloads) {
   std::vector<NearbyFileHandler::FileInfo> file_infos;
   file_infos.push_back({
-    .size = 12355L,
-    .file_path = file1_.file_path().value(),
+      .size = 12355L,
+      .file_path = file1_.file_path().value(),
   });
   info_.CreateFilePayloads(file_infos);
   const std::vector<Payload>& payloads = info_.file_payloads();
@@ -174,10 +168,7 @@ TEST_F(OutgoingShareTargetInfoTest, CreateFilePayloads) {
 
   EXPECT_THAT(attachment_payload_map, SizeIs(1));
   ASSERT_THAT(attachment_payload_map.contains(file1_.id()), IsTrue());
-  ASSERT_THAT(attachment_payload_map.at(file1_.id()).payload_id.has_value(),
-              IsTrue());
-  EXPECT_THAT(attachment_payload_map.at(file1_.id()).payload_id.value(),
-              Eq(payloads[0].id));
+  EXPECT_THAT(attachment_payload_map.at(file1_.id()), Eq(payloads[0].id));
 
   EXPECT_THAT(info_.attachment_container().GetFileAttachments()[0].size(),
               Eq(12355L));
@@ -210,10 +201,7 @@ TEST_F(OutgoingShareTargetInfoTest, CreateWifiCredentialsPayloads) {
 
   ASSERT_THAT(attachment_payload_map, SizeIs(1));
   ASSERT_THAT(attachment_payload_map.contains(wifi1_.id()), IsTrue());
-  ASSERT_THAT(attachment_payload_map.at(wifi1_.id()).payload_id.has_value(),
-              IsTrue());
-  EXPECT_THAT(attachment_payload_map.at(wifi1_.id()).payload_id.value(),
-              Eq(payloads[0].id));
+  EXPECT_THAT(attachment_payload_map.at(wifi1_.id()), Eq(payloads[0].id));
 }
 
 TEST_F(OutgoingShareTargetInfoTest, CreateIntroductionFrameWithoutPayloads) {
@@ -223,8 +211,8 @@ TEST_F(OutgoingShareTargetInfoTest, CreateIntroductionFrameWithoutPayloads) {
 TEST_F(OutgoingShareTargetInfoTest, CreateIntroductionFrameSuccess) {
   std::vector<NearbyFileHandler::FileInfo> file_infos;
   file_infos.push_back({
-    .size = 12355L,
-    .file_path = file1_.file_path().value(),
+      .size = 12355L,
+      .file_path = file1_.file_path().value(),
   });
   info_.CreateFilePayloads(file_infos);
   info_.CreateTextPayloads();
diff --git a/sharing/payload_tracker.cc b/sharing/payload_tracker.cc
index 29e3bac3..0aba05c4 100644
--- a/sharing/payload_tracker.cc
+++ b/sharing/payload_tracker.cc
@@ -26,7 +26,6 @@
 #include "absl/time/clock.h"
 #include "absl/time/time.h"
 #include "sharing/attachment_container.h"
-#include "sharing/attachment_info.h"
 #include "sharing/constants.h"
 #include "sharing/file_attachment.h"
 #include "sharing/internal/public/context.h"
@@ -43,7 +42,7 @@ namespace sharing {
 PayloadTracker::PayloadTracker(
     Context* context, int64_t share_target_id,
     const AttachmentContainer& container,
-    const absl::flat_hash_map<int64_t, AttachmentInfo>& attachment_info_map,
+    const absl::flat_hash_map<int64_t, int64_t>& attachment_payload_map,
     std::function<void(int64_t, TransferMetadata)> update_callback)
     : context_(context),
       share_target_id_(share_target_id),
@@ -52,8 +51,8 @@ PayloadTracker::PayloadTracker(
   confirmed_transfer_size_ = 0;
 
   for (const auto& file : container.GetFileAttachments()) {
-    auto it = attachment_info_map.find(file.id());
-    if (it == attachment_info_map.end() || !it->second.payload_id) {
+    auto it = attachment_payload_map.find(file.id());
+    if (it == attachment_payload_map.end()) {
       NL_LOG(WARNING)
           << __func__
           << ": Failed to retrieve payload for file attachment id - "
@@ -61,15 +60,14 @@ PayloadTracker::PayloadTracker(
       continue;
     }
 
-    payload_state_.emplace(*it->second.payload_id,
-                           State(file.id(), file.size()));
+    payload_state_.emplace(it->second, State(file.id(), file.size()));
     ++num_file_attachments_;
     total_transfer_size_ += file.size();
   }
 
   for (const auto& text : container.GetTextAttachments()) {
-    auto it = attachment_info_map.find(text.id());
-    if (it == attachment_info_map.end() || !it->second.payload_id) {
+    auto it = attachment_payload_map.find(text.id());
+    if (it == attachment_payload_map.end()) {
       NL_LOG(WARNING)
           << __func__
           << ": Failed to retrieve payload for text attachment id - "
@@ -77,16 +75,15 @@ PayloadTracker::PayloadTracker(
       continue;
     }
 
-    payload_state_.emplace(*it->second.payload_id,
-                           State(text.id(), text.size()));
+    payload_state_.emplace(it->second, State(text.id(), text.size()));
     ++num_text_attachments_;
     total_transfer_size_ += text.size();
   }
 
   for (const auto& wifi_credentials :
        container.GetWifiCredentialsAttachments()) {
-    auto it = attachment_info_map.find(wifi_credentials.id());
-    if (it == attachment_info_map.end() || !it->second.payload_id) {
+    auto it = attachment_payload_map.find(wifi_credentials.id());
+    if (it == attachment_payload_map.end()) {
       NL_LOG(WARNING) << __func__
                       << ": Failed to retrieve payload for WiFi credentials "
                          "attachment id - "
@@ -95,8 +92,7 @@ PayloadTracker::PayloadTracker(
     }
 
     payload_state_.emplace(
-        *it->second.payload_id,
-        State(wifi_credentials.id(), wifi_credentials.size()));
+        it->second, State(wifi_credentials.id(), wifi_credentials.size()));
     ++num_wifi_credentials_attachments_;
     total_transfer_size_ += wifi_credentials.size();
   }
diff --git a/sharing/payload_tracker.h b/sharing/payload_tracker.h
index 70335004..a3d18a8d 100644
--- a/sharing/payload_tracker.h
+++ b/sharing/payload_tracker.h
@@ -26,7 +26,6 @@
 #include "absl/container/flat_hash_map.h"
 #include "absl/time/time.h"
 #include "sharing/attachment_container.h"
-#include "sharing/attachment_info.h"
 #include "sharing/internal/public/context.h"
 #include "sharing/nearby_connections_manager.h"
 #include "sharing/nearby_connections_types.h"
@@ -42,7 +41,7 @@ class PayloadTracker : public NearbyConnectionsManager::PayloadStatusListener {
   PayloadTracker(
       Context* context, int64_t share_target_id,
       const AttachmentContainer& container,
-      const absl::flat_hash_map<int64_t, AttachmentInfo>& attachment_info_map,
+      const absl::flat_hash_map<int64_t, int64_t>& attachment_payload_map,
       std::function<void(int64_t, TransferMetadata)> update_callback);
   ~PayloadTracker() override;
 
diff --git a/sharing/payload_tracker_test.cc b/sharing/payload_tracker_test.cc
index ced36d36..c40dc9df 100644
--- a/sharing/payload_tracker_test.cc
+++ b/sharing/payload_tracker_test.cc
@@ -27,7 +27,6 @@
 #include "absl/time/time.h"
 #include "internal/test/fake_clock.h"
 #include "sharing/attachment_container.h"
-#include "sharing/attachment_info.h"
 #include "sharing/file_attachment.h"
 #include "sharing/internal/test/fake_context.h"
 #include "sharing/nearby_connections_types.h"
@@ -50,13 +49,11 @@ class PayloadTrackerTest : public ::testing::Test {
     container_.AddFileAttachment(FileAttachment(
         kFileId, kFileSize, std::string(kFileName), std::string(kMimeType),
         service::proto::FileMetadata::IMAGE));
-    attachment_info_map_.clear();
-    AttachmentInfo attachment_info;
-    attachment_info.payload_id = kFileId;
-    attachment_info_map_.emplace(container_.GetFileAttachments()[0].id(),
-                                 std::move(attachment_info));
+    attachment_payload_map_.clear();
+    attachment_payload_map_.emplace(container_.GetFileAttachments()[0].id(),
+                                 kFileId);
     payload_tracker_ = std::make_unique<PayloadTracker>(
-        context(), kShareTargetId, container_, attachment_info_map_,
+        context(), kShareTargetId, container_, attachment_payload_map_,
         [&](int64_t share_target_id, TransferMetadata transfer_metadata) {
           current_percentage_ = transfer_metadata.progress();
         });
@@ -84,7 +81,7 @@ class PayloadTrackerTest : public ::testing::Test {
   std::unique_ptr<PayloadTracker> payload_tracker_ = nullptr;
   float current_percentage_ = 0.0;
   AttachmentContainer container_;
-  absl::flat_hash_map<int64_t, AttachmentInfo> attachment_info_map_;
+  absl::flat_hash_map<int64_t, int64_t> attachment_payload_map_;
 };
 
 TEST_F(PayloadTrackerTest, StatusUpdateWithoutTimeUpdate) {
diff --git a/sharing/share_target_info.cc b/sharing/share_target_info.cc
index a30294b3..b640bd32 100644
--- a/sharing/share_target_info.cc
+++ b/sharing/share_target_info.cc
@@ -128,7 +128,7 @@ void ShareTargetInfo::OnDisconnect() {
 
 void ShareTargetInfo::SetAttachmentPayloadId(int64_t attachment_id,
                                              int64_t payload_id) {
-  attachment_payload_map_[attachment_id].payload_id = payload_id;
+  attachment_payload_map_[attachment_id] = payload_id;
 }
 
 }  // namespace nearby::sharing
diff --git a/sharing/share_target_info.h b/sharing/share_target_info.h
index 8c7df8db..89418e70 100644
--- a/sharing/share_target_info.h
+++ b/sharing/share_target_info.h
@@ -27,7 +27,6 @@
 #include "absl/time/time.h"
 #include "proto/sharing_enums.pb.h"
 #include "sharing/attachment_container.h"
-#include "sharing/attachment_info.h"
 #include "sharing/certificates/nearby_share_certificate_manager.h"
 #include "sharing/certificates/nearby_share_decrypted_public_certificate.h"
 #include "sharing/incoming_frames_reader.h"
@@ -137,7 +136,7 @@ class ShareTargetInfo {
     return attachment_container_;
   }
 
-  const absl::flat_hash_map<int64_t, AttachmentInfo>& attachment_payload_map()
+  const absl::flat_hash_map<int64_t, int64_t>& attachment_payload_map()
       const {
     return attachment_payload_map_;
   }
@@ -169,7 +168,7 @@ class ShareTargetInfo {
   TransferMetadata::Status disconnect_status_ =
       TransferMetadata::Status::kUnknown;
   AttachmentContainer attachment_container_;
-  absl::flat_hash_map<int64_t, AttachmentInfo> attachment_payload_map_;
+  absl::flat_hash_map<int64_t, int64_t> attachment_payload_map_;
 };
 
 }  // namespace nearby::sharing