diff --git a/ydb/core/tx/columnshard/blobs_action/abstract/blob_set.h b/ydb/core/tx/columnshard/blobs_action/abstract/blob_set.h
index ea5844f5ddb7..ee1cf91bb419 100644
--- a/ydb/core/tx/columnshard/blobs_action/abstract/blob_set.h
+++ b/ydb/core/tx/columnshard/blobs_action/abstract/blob_set.h
@@ -573,11 +573,11 @@ class TBlobsCategories {
     void AddSharing(const TTabletId tabletId, const TUnifiedBlobId& id) {
         AFL_VERIFY(Sharing.Add(tabletId, id));
     }
-    void RemoveSharing(const TTabletId tabletId, const TUnifiedBlobId& id) {
-        Y_UNUSED(Sharing.Remove(tabletId, id));
+    [[nodiscard]] bool RemoveSharing(const TTabletId tabletId, const TUnifiedBlobId& id) {
+        return Sharing.Remove(tabletId, id);
     }
-    void RemoveBorrowed(const TTabletId tabletId, const TUnifiedBlobId& id) {
-        Y_UNUSED(Borrowed.Remove(tabletId, id));
+    [[nodiscard]] bool RemoveBorrowed(const TTabletId tabletId, const TUnifiedBlobId& id) {
+        return Borrowed.Remove(tabletId, id);
     }
     TBlobsCategories(const TTabletId selfTabletId)
         : SelfTabletId(selfTabletId)
diff --git a/ydb/core/tx/columnshard/blobs_action/abstract/gc.h b/ydb/core/tx/columnshard/blobs_action/abstract/gc.h
index 19e2da1b39b6..3c7279e7b3f1 100644
--- a/ydb/core/tx/columnshard/blobs_action/abstract/gc.h
+++ b/ydb/core/tx/columnshard/blobs_action/abstract/gc.h
@@ -33,7 +33,7 @@ class IBlobsGCAction: public ICommonBlobsAction {
     virtual bool DoIsEmpty() const = 0;
 public:
     void AddSharedBlobToNextIteration(const TUnifiedBlobId& blobId, const TTabletId ownerTabletId) {
-        BlobsToRemove.RemoveSharing(ownerTabletId, blobId);
+        AFL_VERIFY(BlobsToRemove.RemoveBorrowed(ownerTabletId, blobId));
     }
 
     void OnExecuteTxAfterCleaning(NColumnShard::TColumnShard& self, TBlobManagerDb& dbBlobs);
diff --git a/ydb/core/tx/columnshard/blobs_action/transaction/tx_remove_blobs.h b/ydb/core/tx/columnshard/blobs_action/transaction/tx_remove_blobs.h
index 937174875fb2..437a16874bce 100644
--- a/ydb/core/tx/columnshard/blobs_action/transaction/tx_remove_blobs.h
+++ b/ydb/core/tx/columnshard/blobs_action/transaction/tx_remove_blobs.h
@@ -36,8 +36,12 @@ class TTxRemoveSharedBlobs: public TTransactionBase<TColumnShard> {
         for (auto it = categories.GetDirect().GetIterator(); it.IsValid(); ++it) {
             RemoveAction->DeclareRemove(it.GetTabletId(), it.GetBlobId());
         }
+        for (auto it = categories.GetBorrowed().GetIterator(); it.IsValid(); ++it) {
+            AFL_ERROR(NKikimrServices::TX_COLUMNSHARD_BLOBS)("problem", "borrowed_to_remove")("blob_id", it.GetBlobId())("tablet_id", it.GetTabletId());
+        }
         AFL_VERIFY(categories.GetBorrowed().IsEmpty());
-        AFL_VERIFY(categories.GetSharing().GetSize() == SharingBlobIds.GetSize());
+        AFL_VERIFY(categories.GetSharing().GetSize() == SharingBlobIds.GetSize())("sharing_category", categories.GetSharing().GetSize())(
+                                                            "sharing", SharingBlobIds.GetSize());
     }
 
     bool Execute(TTransactionContext& txc, const TActorContext& ctx) override;
diff --git a/ydb/core/tx/columnshard/columnshard_impl.cpp b/ydb/core/tx/columnshard/columnshard_impl.cpp
index 2e090c9dbfd1..92a2b8a057ef 100644
--- a/ydb/core/tx/columnshard/columnshard_impl.cpp
+++ b/ydb/core/tx/columnshard/columnshard_impl.cpp
@@ -1072,9 +1072,13 @@ void TColumnShard::Handle(TAutoPtr<TEventHandle<NOlap::NBackground::TEvExecuteGe
 void TColumnShard::Handle(NOlap::NBlobOperations::NEvents::TEvDeleteSharedBlobs::TPtr& ev, const TActorContext& ctx) {
     if (SharingSessionsManager->IsSharingInProgress()) {
         ctx.Send(NActors::ActorIdFromProto(ev->Get()->Record.GetSourceActorId()),
-            new NOlap::NBlobOperations::NEvents::TEvDeleteSharedBlobsFinished((NOlap::TTabletId)TabletID(),
-                NKikimrColumnShardBlobOperationsProto::TEvDeleteSharedBlobsFinished::DestinationCurrenlyLocked));
-        AFL_DEBUG(NKikimrServices::TX_COLUMNSHARD)("event", "sharing_in_progress");
+            new NOlap::NBlobOperations::NEvents::TEvDeleteSharedBlobsFinished(
+                (NOlap::TTabletId)TabletID(), NKikimrColumnShardBlobOperationsProto::TEvDeleteSharedBlobsFinished::DestinationCurrenlyLocked));
+        for (auto&& i : ev->Get()->Record.GetBlobIds()) {
+            AFL_DEBUG(NKikimrServices::TX_COLUMNSHARD_BLOBS)("event", "sharing_in_progress")("blob_id", i)(
+                "from_tablet", ev->Get()->Record.GetSourceTabletId());
+        }
+
         return;
     }
 
diff --git a/ydb/core/tx/columnshard/hooks/testing/controller.cpp b/ydb/core/tx/columnshard/hooks/testing/controller.cpp
index 80221a369724..9cf3a7e7e9b5 100644
--- a/ydb/core/tx/columnshard/hooks/testing/controller.cpp
+++ b/ydb/core/tx/columnshard/hooks/testing/controller.cpp
@@ -52,11 +52,11 @@ void TController::CheckInvariants(const ::NKikimr::NColumnShard::TColumnShard& s
         const NOlap::TTabletsByBlob blobs = manager->GetBlobsToDelete();
         for (auto b = blobs.GetIterator(); b.IsValid(); ++b) {
             Cerr << shard.TabletID() << " SHARING_REMOVE_LOCAL:" << b.GetBlobId().ToStringNew() << " FROM " << b.GetTabletId() << Endl;
-            i.second.RemoveSharing(b.GetTabletId(), b.GetBlobId());
+            Y_UNUSED(i.second.RemoveSharing(b.GetTabletId(), b.GetBlobId()));
         }
         for (auto b = blobs.GetIterator(); b.IsValid(); ++b) {
             Cerr << shard.TabletID() << " BORROWED_REMOVE_LOCAL:" << b.GetBlobId().ToStringNew() << " FROM " << b.GetTabletId() << Endl;
-            i.second.RemoveBorrowed(b.GetTabletId(), b.GetBlobId());
+            Y_UNUSED(i.second.RemoveBorrowed(b.GetTabletId(), b.GetBlobId()));
         }
     }
     context.AddCategories(shard.TabletID(), std::move(shardBlobsCategories));