diff --git a/scimono-server/src/main/java/com/sap/scimono/api/Groups.java b/scimono-server/src/main/java/com/sap/scimono/api/Groups.java
index a785d1c..424a2d0 100644
--- a/scimono-server/src/main/java/com/sap/scimono/api/Groups.java
+++ b/scimono-server/src/main/java/com/sap/scimono/api/Groups.java
@@ -89,10 +89,11 @@ public Groups(@Context Application appContext, @Context UriInfo uriInfo) {
   // @formatter:off
   public Response getGroup(@PathParam("id") final String groupId,
                            @QueryParam(ATTRIBUTES_PARAM) final String attributes,
+                           @QueryParam(FILTER_PARAM) final String filter,
                            @QueryParam(EXCLUDED_ATTRIBUTES_PARAM) final String excludedAttributes) {
     // @formatter:on
     logger.trace("Reading group {}", groupId);
-    Group groupFromDb = groupAPI.getGroup(groupId, RequestedResourceAttributesParser.parse(attributes, excludedAttributes));
+    Group groupFromDb = groupAPI.getGroup(groupId, RequestedResourceAttributesParser.parse(attributes, excludedAttributes), filter);
 
     if (groupFromDb == null) {
       throw new ResourceNotFoundException(RESOURCE_TYPE_GROUP, groupId);
diff --git a/scimono-server/src/main/java/com/sap/scimono/api/Users.java b/scimono-server/src/main/java/com/sap/scimono/api/Users.java
index 84c03e7..05aa3a0 100644
--- a/scimono-server/src/main/java/com/sap/scimono/api/Users.java
+++ b/scimono-server/src/main/java/com/sap/scimono/api/Users.java
@@ -118,11 +118,12 @@ public Response getMe(@Context final SecurityContext sec) {
   @Path("{id}")
   // @formatter:off
   public Response getUser(@PathParam("id")  final String userId,
+                          @QueryParam(FILTER_PARAM) final String filter,
                           @QueryParam(ATTRIBUTES_PARAM) final String attributes,
                           @QueryParam(EXCLUDED_ATTRIBUTES_PARAM) final String excludedAttributes) {
     // @formatter:on
     logger.trace("Reading user {}", userId);
-    User userFromDb = usersAPI.getUser(userId, RequestedResourceAttributesParser.parse(attributes, excludedAttributes));
+    User userFromDb = usersAPI.getUser(userId, RequestedResourceAttributesParser.parse(attributes, excludedAttributes), filter);
 
     if (userFromDb == null) {
       throw new ResourceNotFoundException(RESOURCE_TYPE_USER, userId);
diff --git a/scimono-server/src/main/java/com/sap/scimono/callback/groups/GroupsCallback.java b/scimono-server/src/main/java/com/sap/scimono/callback/groups/GroupsCallback.java
index f6ced2d..9a9672f 100644
--- a/scimono-server/src/main/java/com/sap/scimono/callback/groups/GroupsCallback.java
+++ b/scimono-server/src/main/java/com/sap/scimono/callback/groups/GroupsCallback.java
@@ -16,15 +16,30 @@
 
 public interface GroupsCallback {
   /**
-   * @param groupId, unique group id
+   * @param groupId unique group id of the requested group
    * @return the group with the specified groupId or null if no such group exists
    */
   Group getGroup(final String groupId);
 
+  /**
+   * @param groupId               unique group id of the requested group
+   * @param additionalAttributes  additional attributes to be returned or excluded from the response
+   * @return the group with the specified groupId or null if no such group exists
+   */
   default Group getGroup(String groupId, RequestedResourceAttributes additionalAttributes) {
     return getGroup(groupId);
   }
 
+  /**
+   * @param groupId               unique group id of the requested group
+   * @param additionalAttributes  additional attributes to be returned or excluded from the response
+   * @param filter                value of the filter query parameter
+   * @return the group with the specified groupId or null if no such group exists
+   */
+  default Group getGroup(String groupId, RequestedResourceAttributes additionalAttributes, String filter) {
+    return getGroup(groupId, additionalAttributes);
+  }
+
   /**
    * Returns a page of groups (limited by {@link SCIMConfigurationCallback#getMaxResourcesPerPage()}),
    * taking into account the specified filter and paging parameters.
diff --git a/scimono-server/src/main/java/com/sap/scimono/callback/users/UsersCallback.java b/scimono-server/src/main/java/com/sap/scimono/callback/users/UsersCallback.java
index 1d7e04a..7832876 100644
--- a/scimono-server/src/main/java/com/sap/scimono/callback/users/UsersCallback.java
+++ b/scimono-server/src/main/java/com/sap/scimono/callback/users/UsersCallback.java
@@ -36,6 +36,15 @@ default User getUser(String userId, RequestedResourceAttributes additionalAttrib
     return getUser(userId);
   }
 
+  /**
+   * @param additionalAttributes additional attributes to be returned of excluded from the response
+   * @param filter               value of the filter query parameter
+   * @return the user with the specified userId or null if no such user exists
+   */
+  default User getUser(String userId, RequestedResourceAttributes additionalAttributes, final String filter) {
+    return getUser(userId, additionalAttributes);
+  }
+
   /**
    * Returns a page of users (limited by {@link SCIMConfigurationCallback#getMaxResourcesPerPage()}),
    * taking into account the specified filter and paging parameters.