diff --git a/src/main/java/com/samic/samic/services/ServiceReservation.java b/src/main/java/com/samic/samic/services/ServiceReservation.java
index 1a1f57d..a535464 100644
--- a/src/main/java/com/samic/samic/services/ServiceReservation.java
+++ b/src/main/java/com/samic/samic/services/ServiceReservation.java
@@ -5,6 +5,7 @@
 import com.samic.samic.data.entity.User;
 import com.samic.samic.data.repositories.RepositoryReservation;
 import com.samic.samic.exceptions.ReservationException;
+import com.samic.samic.security.AuthenticatedUser;
 import lombok.RequiredArgsConstructor;
 import lombok.extern.log4j.Log4j2;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -26,9 +27,9 @@ public class ServiceReservation{
     @Autowired
     private final RepositoryReservation repositoryReservation;
     @Autowired
-    private final ServiceStorageObject serviceStorageObject;
-    //    @Autowired
-    //    private final AuthenticatedUser authenticatedUser;
+    private final ServiceStorageObject  serviceStorageObject;
+    @Autowired
+    private final AuthenticatedUser     authenticatedUser;
 
     @Transactional
     public Reservation saveReservationByObject(Reservation reservation){
@@ -58,6 +59,20 @@ public Reservation saveReservationByObject(Reservation reservation){
         }
     }
 
+    public Reservation updateReservation(Reservation reservation){
+        if(reservation != null){
+            if(reservation.getId() != null && reservation.getReservedFrom()
+                                                         .equals(authenticatedUser.getUser()
+                                                                                  .get())){
+                return repositoryReservation.save(reservation);
+            }else{
+                throw new ReservationException(reservation.getId() == null ? "Reservation ID is not set!" : "User does not match with Logged in user!");
+            }
+        }else{
+            throw new ReservationException("Given Reservation is null");
+        }
+    }
+
     @Transactional
     public Reservation findReservationById(Long id){
         if(id != null){
@@ -97,7 +112,8 @@ public void deleteReservationById(Long id){
 
     public void deleteByObject(Reservation reservation){
         if(reservation != null){
-            if(repositoryReservation.findById(reservation.getId()).isPresent()){
+            if(repositoryReservation.findById(reservation.getId())
+                                    .isPresent()){
 
                 reservation.setReservedFrom(null);
                 StorageObject tempSto = serviceStorageObject.findStorageObjectByReservationID(reservation.getId());