diff --git a/code/go/0chain.net/blobbercore/handler/file_command.go b/code/go/0chain.net/blobbercore/handler/file_command.go
index 08ed1e076..3ea8bae7b 100644
--- a/code/go/0chain.net/blobbercore/handler/file_command.go
+++ b/code/go/0chain.net/blobbercore/handler/file_command.go
@@ -2,10 +2,14 @@ package handler
 
 import (
 	"context"
+	"fmt"
 	"net/http"
 
 	"github.com/0chain/blobber/code/go/0chain.net/blobbercore/allocation"
 	"github.com/0chain/blobber/code/go/0chain.net/blobbercore/blobberhttp"
+	"github.com/0chain/blobber/code/go/0chain.net/blobbercore/reference"
+	"github.com/0chain/blobber/code/go/0chain.net/core/common"
+	"github.com/0chain/blobber/code/go/0chain.net/core/logging"
 )
 
 // FileCommand execute command for a file operation
@@ -37,3 +41,27 @@ func createFileCommand(req *http.Request) FileCommand {
 		return &AddFileCommand{}
 	}
 }
+
+// validateParentPathType validates against any parent path not being directory.
+func validateParentPathType(ctx context.Context, allocationID, fPath string) error {
+	paths, err := common.GetParentPaths(fPath)
+	if err != nil {
+		return err
+	}
+
+	refs, err := reference.GetRefsTypeFromPaths(ctx, allocationID, paths)
+	if err != nil {
+		logging.Logger.Error(err.Error())
+		return common.NewError("database_error", "Got error while getting parent refs")
+	}
+
+	for _, ref := range refs {
+		if ref == nil {
+			continue
+		}
+		if ref.Type == reference.FILE {
+			return common.NewError("invalid_path", fmt.Sprintf("parent path %v is of file type", ref.Path))
+		}
+	}
+	return nil
+}
diff --git a/code/go/0chain.net/blobbercore/handler/file_command_add.go b/code/go/0chain.net/blobbercore/handler/file_command_add.go
index 94c69a251..85933f64e 100644
--- a/code/go/0chain.net/blobbercore/handler/file_command_add.go
+++ b/code/go/0chain.net/blobbercore/handler/file_command_add.go
@@ -3,7 +3,9 @@ package handler
 import (
 	"context"
 	"encoding/json"
+	"fmt"
 	"net/http"
+	"path/filepath"
 
 	"github.com/0chain/blobber/code/go/0chain.net/blobbercore/allocation"
 	"github.com/0chain/blobber/code/go/0chain.net/blobbercore/blobberhttp"
@@ -36,12 +38,25 @@ func (cmd *AddFileCommand) IsAuthorized(ctx context.Context, req *http.Request,
 		return common.NewError("invalid_parameters",
 			"Invalid parameters. Error parsing the meta data for upload."+err.Error())
 	}
-	exisitingFileRef, _ := reference.GetReference(ctx, allocationObj.ID, fileChanger.Path)
 
-	if exisitingFileRef != nil {
+	if !filepath.IsAbs(fileChanger.Path) {
+		return common.NewError("invalid_path", fmt.Sprintf("%v is not absolute path", fileChanger.Path))
+	}
+
+	isExist, err := reference.IsRefExist(ctx, allocationObj.ID, fileChanger.Path)
+	if err != nil {
+		logging.Logger.Error(err.Error())
+		return common.NewError("database_error", "Got db error while getting ref")
+	}
+
+	if isExist {
 		return common.NewError("duplicate_file", "File at path already exists")
 	}
 
+	if err := validateParentPathType(ctx, allocationObj.ID, fileChanger.Path); err != nil {
+		return err
+	}
+
 	//create a FixedMerkleTree instance first, it will be reloaded from db in cmd.reloadChange if it is not first chunk
 	//cmd.fileChanger.FixedMerkleTree = &util.FixedMerkleTree{}
 
diff --git a/code/go/0chain.net/blobbercore/handler/handler_test.go b/code/go/0chain.net/blobbercore/handler/handler_test.go
index f09bd17d8..dd092f71e 100644
--- a/code/go/0chain.net/blobbercore/handler/handler_test.go
+++ b/code/go/0chain.net/blobbercore/handler/handler_test.go
@@ -3,7 +3,6 @@ package handler
 import (
 	"bytes"
 	"encoding/json"
-	"errors"
 	"fmt"
 	"io"
 	"mime/multipart"
@@ -864,7 +863,7 @@ func TestHandlers_Requiring_Signature(t *testing.T) {
 					q.Set("path", path)
 					q.Set("new_name", newName)
 					q.Set("connection_id", connectionID)
-					q.Set("dest", "dest")
+					q.Set("dest", "/dest")
 					url.RawQuery = q.Encode()
 
 					r, err := http.NewRequest(http.MethodPost, url.String(), nil)
@@ -915,13 +914,15 @@ func TestHandlers_Requiring_Signature(t *testing.T) {
 				mock.ExpectQuery(regexp.QuoteMeta(`SELECT * FROM "reference_objects" WHERE`)).
 					WithArgs(alloc.ID, lookUpHash).
 					WillReturnRows(
-						sqlmock.NewRows([]string{"type"}).
-							AddRow(reference.FILE),
+						sqlmock.NewRows([]string{"type", "name"}).
+							AddRow(reference.FILE, "path"),
 					)
 
-				mock.ExpectQuery(regexp.QuoteMeta(`SELECT * FROM "reference_objects" WHERE`)).
-					WithArgs(aa, aa).
-					WillReturnError(errors.New(""))
+				mock.ExpectQuery(regexp.QuoteMeta(`SELECT "path","type" FROM "reference_objects" WHERE`)).
+					WillReturnRows(
+						sqlmock.NewRows([]string{"path", "type"}).
+							AddRow("/dest", reference.DIRECTORY),
+					)
 
 				mock.ExpectExec(`INSERT INTO "allocation_connections"`).
 					WithArgs(aa, aa, aa, aa, aa, aa, aa).
@@ -1034,7 +1035,9 @@ func TestHandlers_Requiring_Signature(t *testing.T) {
 					}
 
 					q := url.Query()
-					formFieldByt, err := json.Marshal(&allocation.UpdateFileChanger{})
+					formFieldByt, err := json.Marshal(
+						&allocation.UpdateFileChanger{
+							BaseFileChanger: allocation.BaseFileChanger{Path: path}})
 					if err != nil {
 						t.Fatal(err)
 					}
@@ -1110,9 +1113,16 @@ func TestHandlers_Requiring_Signature(t *testing.T) {
 					)
 
 				mock.ExpectQuery(regexp.QuoteMeta(`SELECT * FROM "reference_objects"`)).
-					WithArgs(aa).
+					WithArgs(aa, aa).
 					WillReturnError(gorm.ErrRecordNotFound)
 
+				mock.ExpectQuery(regexp.QuoteMeta(`SELECT count(*) FROM "reference_objects"`)).
+					WithArgs(aa, aa).
+					WillReturnRows(
+						sqlmock.NewRows([]string{"count"}).
+							AddRow(0),
+					)
+
 				mock.ExpectQuery(regexp.QuoteMeta(`SELECT * FROM "allocation_connections" WHERE`)).
 					WithArgs(connectionID, alloc.ID, alloc.OwnerID, allocation.DeletedConnection).
 					WillReturnRows(
diff --git a/code/go/0chain.net/blobbercore/handler/object_operation_handler.go b/code/go/0chain.net/blobbercore/handler/object_operation_handler.go
index bddb45e4a..85c0c6fcc 100644
--- a/code/go/0chain.net/blobbercore/handler/object_operation_handler.go
+++ b/code/go/0chain.net/blobbercore/handler/object_operation_handler.go
@@ -5,6 +5,7 @@ import (
 	"encoding/hex"
 	"encoding/json"
 	"errors"
+	"fmt"
 
 	"github.com/0chain/blobber/code/go/0chain.net/blobbercore/blobberhttp"
 	"github.com/0chain/blobber/code/go/0chain.net/blobbercore/stats"
@@ -790,10 +791,30 @@ func (fsh *StorageHandler) CopyObject(ctx context.Context, r *http.Request) (int
 	if err != nil {
 		return nil, common.NewError("invalid_parameters", "Invalid file path. "+err.Error())
 	}
+
 	newPath := filepath.Join(destPath, objectRef.Name)
-	destRef, _ := reference.GetReference(ctx, allocationID, newPath)
-	if destRef != nil {
-		return nil, common.NewError("invalid_parameters", "Invalid destination path. Object Already exists.")
+	paths, err := common.GetParentPaths(newPath)
+	if err != nil {
+		return nil, err
+	}
+
+	paths = append(paths, newPath)
+
+	refs, err := reference.GetRefsTypeFromPaths(ctx, allocationID, paths)
+	if err != nil {
+		Logger.Error("Database error", zap.Error(err))
+		return nil, common.NewError("database_error", fmt.Sprintf("Got db error while getting refs for %v", paths))
+	}
+
+	for _, ref := range refs {
+		switch ref.Path {
+		case newPath:
+			return nil, common.NewError("invalid_parameters", "Invalid destination path. Object Already exists.")
+		default:
+			if ref.Type == reference.FILE {
+				return nil, common.NewError("invalid_path", fmt.Sprintf("%v is of file type", ref.Path))
+			}
+		}
 	}
 
 	allocationChange := &allocation.AllocationChange{}
@@ -880,6 +901,10 @@ func (fsh *StorageHandler) CreateDir(ctx context.Context, r *http.Request) (*blo
 		return nil, common.NewError("invalid_parameters", "Invalid dir path passed")
 	}
 
+	if !filepath.IsAbs(dirPath) {
+		return nil, common.NewError("invalid_path", fmt.Sprintf("%v is not absolute path", dirPath))
+	}
+
 	exisitingRef := fsh.checkIfFileAlreadyExists(ctx, allocationID, dirPath)
 	if allocationObj.OwnerID != clientID && allocationObj.PayerID != clientID {
 		return nil, common.NewError("invalid_operation", "Operation needs to be performed by the owner or the payer of the allocation")
@@ -889,6 +914,10 @@ func (fsh *StorageHandler) CreateDir(ctx context.Context, r *http.Request) (*blo
 		return nil, common.NewError("duplicate_file", "File at path already exists")
 	}
 
+	if err := validateParentPathType(ctx, allocationID, dirPath); err != nil {
+		return nil, err
+	}
+
 	connectionID := r.FormValue("connection_id")
 	if connectionID == "" {
 		return nil, common.NewError("invalid_parameters", "Invalid connection id passed")
diff --git a/code/go/0chain.net/blobbercore/handler/upload_integration_test.go b/code/go/0chain.net/blobbercore/handler/upload_integration_test.go
index b06d7c048..1e938a373 100644
--- a/code/go/0chain.net/blobbercore/handler/upload_integration_test.go
+++ b/code/go/0chain.net/blobbercore/handler/upload_integration_test.go
@@ -25,7 +25,8 @@ func TestBlobberGRPCService_UploadFile(t *testing.T) {
 	pubKeyBytes, _ := hex.DecodeString(pubKey)
 	clientId := encryption.Hash(pubKeyBytes)
 
-	formFieldByt, err := json.Marshal(&allocation.UpdateFileChanger{BaseFileChanger: allocation.BaseFileChanger{Filename: `helper_integration_test.go`}})
+	path := "/some_file"
+	formFieldByt, err := json.Marshal(&allocation.UpdateFileChanger{BaseFileChanger: allocation.BaseFileChanger{Filename: `helper_integration_test.go`, Path: path}})
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -68,7 +69,7 @@ func TestBlobberGRPCService_UploadFile(t *testing.T) {
 
 			input: &blobbergrpc.UploadFileRequest{
 				Allocation:          allocationTx,
-				Path:                "/some_file",
+				Path:                path,
 				ConnectionId:        "connection_id",
 				Method:              "POST",
 				UploadMeta:          string(formFieldByt),
diff --git a/code/go/0chain.net/blobbercore/reference/ref.go b/code/go/0chain.net/blobbercore/reference/ref.go
index 80deec905..015d7de97 100644
--- a/code/go/0chain.net/blobbercore/reference/ref.go
+++ b/code/go/0chain.net/blobbercore/reference/ref.go
@@ -235,6 +235,55 @@ func GetReferenceFromLookupHash(ctx context.Context, allocationID, path_hash str
 	return nil, err
 }
 
+// GetRefType Select type from ref and return it
+func GetRefType(ctx context.Context, allocationID, path string) (string, error) {
+	ref := new(Ref)
+	db := datastore.GetStore().GetTransaction(ctx)
+	err := db.Select("type").Where("allocation_id=? AND path=?", allocationID, path).First(ref).Error
+	if err != nil {
+		return "", err
+	}
+	return ref.Type, nil
+}
+
+// GetRefWithID Return Ref with only ID selected in sql query
+func GetRefWithID(ctx context.Context, allocationID, path string) (*Ref, error) {
+	ref := new(Ref)
+	db := datastore.GetStore().GetTransaction(ctx)
+	err := db.Select("id").Where("allocation_id=? AND path=?", allocationID, path).First(ref).Error
+	if err != nil {
+		return nil, err
+	}
+	return ref, nil
+}
+
+// IsRefExist checks if ref with given path exists and returns error other than gorm.ErrRecordNotFound
+func IsRefExist(ctx context.Context, allocationID, path string) (bool, error) {
+	db := datastore.GetStore().GetTransaction(ctx)
+	var count int64
+	if err := db.Model(&Ref{}).Where("allocation_id=? AND path=?", allocationID, path).Count(&count).Error; err != nil {
+		return false, err
+	}
+
+	return count > 0, nil
+}
+
+// GetRefsTypeFromPaths Give list of paths it will return refs of respective path with only Type and Path selected in sql query
+func GetRefsTypeFromPaths(ctx context.Context, allocationID string, paths []string) (refs []*Ref, err error) {
+	if len(paths) == 0 {
+		return
+	}
+
+	db := datastore.GetStore().GetTransaction(ctx)
+	db = db.Select("path", "type")
+	for _, p := range paths {
+		db = db.Or(Ref{AllocationID: allocationID, Path: p})
+	}
+
+	err = db.Find(&refs).Error
+	return
+}
+
 func GetSubDirsFromPath(p string) []string {
 	path := p
 	parent, cur := filepath.Split(path)
diff --git a/code/go/0chain.net/core/common/utils.go b/code/go/0chain.net/core/common/utils.go
index 558bad211..9b68754de 100644
--- a/code/go/0chain.net/core/common/utils.go
+++ b/code/go/0chain.net/core/common/utils.go
@@ -1,6 +1,10 @@
 package common
 
-import "fmt"
+import (
+	"fmt"
+	"path/filepath"
+	"strings"
+)
 
 // IsEmpty checks whether the input string is empty or not
 func IsEmpty(s string) bool {
@@ -22,3 +26,23 @@ func ToKey(key interface{}) string {
 func IsEqual(key1, key2 string) bool {
 	return key1 == key2
 }
+
+// getParentPaths For path /a/b/c.txt, will return [/a,/a/b]
+func GetParentPaths(fPath string) ([]string, error) {
+	if fPath == "" {
+		return nil, nil
+	}
+
+	fPath = filepath.Clean(fPath)
+	if !filepath.IsAbs(fPath) {
+		return nil, NewError("invalid_path", fmt.Sprintf("%v is not absolute path", fPath))
+	}
+	splittedPaths := strings.Split(fPath, "/")
+	var paths []string
+
+	for i := 0; i < len(splittedPaths); i++ {
+		subPath := strings.Join(splittedPaths[0:i], "/")
+		paths = append(paths, subPath)
+	}
+	return paths[2:], nil
+}