diff --git a/blobstore/common/errors/errors.go b/blobstore/common/errors/errors.go
index d50cfbca4..5dd13368e 100644
--- a/blobstore/common/errors/errors.go
+++ b/blobstore/common/errors/errors.go
@@ -158,18 +158,19 @@ var errCodeMap = map[int]string{
 
 	CodeShardNodeNotLeader:          "shardnode:not leader",
 	CodeShardRangeMismatch:          "shardnode:range mismatch",
-	CodeShardDoesNotExist:           "shardnode:does not exist",
+	CodeShardDoesNotExist:           "shardnode:shard does not exist",
 	CodeShardNodeDiskNotFound:       "shardnode:disk not found",
 	CodeUnknownField:                "shardnode:unknown field",
 	CodeShardRouteVersionNeedUpdate: "shardnode:route version need update",
 	CodeShardNoLeader:               "shardnode:shard has no leader",
-	CodeIllegalSlices:               "shardnode:alloc with illegal slices",
+	CodeIllegalSlices:               "shardnode:illegal slices",
 	CodeBlobAlreadyExists:           "shardnode:blob already exists",
 	CodeShardConflicts:              "shardnode:shard conflicts",
 	CodeKeySizeTooLarge:             "shardnode:key size large than 32KB",
 	CodeValueSizeTooLarge:           "shardnode:value size large than 16MB",
 	CodeKeyNotFound:                 "shardnode:key not found",
 	CodeBlobAlreadySealed:           "shardnode:blob already sealed",
+	CodeBlobNameEmpty:               "shardnode:blob name is empty",
 }
 
 // HTTPError make rpc.HTTPError
diff --git a/blobstore/common/errors/shardnode.go b/blobstore/common/errors/shardnode.go
index 41f9e79d8..aa0bcda01 100644
--- a/blobstore/common/errors/shardnode.go
+++ b/blobstore/common/errors/shardnode.go
@@ -30,6 +30,7 @@ const (
 	CodeValueSizeTooLarge           = 1013
 	CodeKeyNotFound                 = 1014
 	CodeBlobAlreadySealed           = 1015
+	CodeBlobNameEmpty               = 1016
 )
 
 // 10xx
@@ -49,4 +50,5 @@ var (
 	ErrValueSizeTooLarge           = Error(CodeValueSizeTooLarge)
 	ErrKeyNotFound                 = Error(CodeKeyNotFound)
 	ErrBlobAlreadySealed           = Error(CodeBlobAlreadySealed)
+	ErrBlobNameEmpty               = Error(CodeBlobNameEmpty)
 )
diff --git a/blobstore/shardnode/blob.go b/blobstore/shardnode/blob.go
index eeef0976a..9cc2ab6a8 100644
--- a/blobstore/shardnode/blob.go
+++ b/blobstore/shardnode/blob.go
@@ -24,6 +24,10 @@ import (
 )
 
 func (s *service) createBlob(ctx context.Context, req *shardnode.CreateBlobArgs) (resp shardnode.CreateBlobRet, err error) {
+	if len(req.Name) < 1 {
+		err = apierr.ErrBlobNameEmpty
+		return
+	}
 	if len(req.Name) > storage.MaxKeySize {
 		err = apierr.ErrKeySizeTooLarge
 		return
@@ -40,7 +44,7 @@ func (s *service) deleteBlob(ctx context.Context, req *shardnode.DeleteBlobArgs)
 	sid := req.Header.SpaceID
 	space, err := s.catalog.GetSpace(ctx, sid)
 	if err != nil {
-		return nil
+		return err
 	}
 	return space.DeleteBlob(ctx, req)
 }
@@ -49,7 +53,7 @@ func (s *service) sealBlob(ctx context.Context, req *shardnode.SealBlobArgs) err
 	sid := req.Header.SpaceID
 	space, err := s.catalog.GetSpace(ctx, sid)
 	if err != nil {
-		return nil
+		return err
 	}
 	return space.SealBlob(ctx, req)
 }