diff --git a/src/zabapgit_object_fugr.prog.abap b/src/zabapgit_object_fugr.prog.abap
index ce2d916de..97aaf4f86 100644
--- a/src/zabapgit_object_fugr.prog.abap
+++ b/src/zabapgit_object_fugr.prog.abap
@@ -86,8 +86,8 @@ CLASS lcl_object_fugr IMPLEMENTATION.
 
   METHOD lif_object~has_changed_since.
 
-    DATA: lt_functab      TYPE ty_rs38l_incl_tt,
-          lt_includes     TYPE rso_t_objnm.
+    DATA: lt_functab  TYPE ty_rs38l_incl_tt,
+          lt_includes TYPE rso_t_objnm.
 
     FIELD-SYMBOLS: <ls_func>      LIKE LINE OF lt_functab,
                    <include_name> LIKE LINE OF lt_includes.
@@ -117,7 +117,70 @@ CLASS lcl_object_fugr IMPLEMENTATION.
   ENDMETHOD.  "lif_object~has_changed_since
 
   METHOD lif_object~changed_by.
-    rv_user = c_user_unknown. " todo
+
+    TYPES: BEGIN OF ty_stamps,
+             user TYPE xubname,
+             date TYPE d,
+             time TYPE t,
+           END OF ty_stamps.
+
+    DATA: lt_stamps   TYPE STANDARD TABLE OF ty_stamps WITH DEFAULT KEY,
+          lv_program  TYPE program,
+          lt_includes TYPE rso_t_objnm.
+
+    FIELD-SYMBOLS: <ls_stamp>   LIKE LINE OF lt_stamps,
+                   <lv_include> LIKE LINE OF lt_includes.
+
+
+    lv_program = main_name( ).
+
+    CALL FUNCTION 'RS_GET_ALL_INCLUDES'
+      EXPORTING
+        program      = lv_program
+      TABLES
+        includetab   = lt_includes
+      EXCEPTIONS
+        not_existent = 1
+        no_program   = 2
+        OTHERS       = 3.
+    IF sy-subrc <> 0.
+      lcx_exception=>raise( 'Error from RS_GET_ALL_INCLUDES' ).
+    ENDIF.
+
+    SELECT unam AS user udat AS date utime AS time FROM reposrc
+      APPENDING CORRESPONDING FIELDS OF TABLE lt_stamps
+      WHERE progname = lv_program
+      AND   r3state = 'A'.
+
+    LOOP AT lt_includes ASSIGNING <lv_include>.
+      SELECT unam AS user udat AS date utime AS time FROM reposrc
+        APPENDING CORRESPONDING FIELDS OF TABLE lt_stamps
+        WHERE progname = <lv_include>
+        AND   r3state = 'A'.
+    ENDLOOP.
+
+    SELECT unam AS user udat AS date utime AS time FROM repotext " Program text pool
+      APPENDING CORRESPONDING FIELDS OF TABLE lt_stamps
+      WHERE progname = lv_program
+      AND   r3state = 'A'.
+
+    SELECT vautor AS user vdatum AS date vzeit AS time FROM eudb         " GUI
+      APPENDING CORRESPONDING FIELDS OF TABLE lt_stamps
+      WHERE relid = 'CU'
+      AND   name  = lv_program
+      AND   srtf2 = 0 ##TOO_MANY_ITAB_FIELDS.
+
+* Screens: username not stored in D020S database table
+
+    SORT lt_stamps BY date DESCENDING time DESCENDING.
+
+    READ TABLE lt_stamps INDEX 1 ASSIGNING <ls_stamp>.
+    IF sy-subrc = 0.
+      rv_user = <ls_stamp>-user.
+    ELSE.
+      rv_user = c_user_unknown.
+    ENDIF.
+
   ENDMETHOD.
 
   METHOD lif_object~get_metadata.