Creation date is not an editable field.

bt5/erp5_dms/SkinTemplateItem/portal_skins/erp5_dms/Base_viewDMSFieldLibrary/my_view_mode_listbox_read_only_creation_date.xml

@@ -11,6 +11,7 @@
             <value>
               <list>
                 <string>date_only</string>
+                <string>editable</string>
                 <string>title</string>
               </list>
             </value>
@@ -76,6 +77,10 @@
                     <key> <string>date_only</string> </key>
                     <value> <int>0</int> </value>
                 </item>
+                <item>
+                    <key> <string>editable</string> </key>
+                    <value> <int>0</int> </value>
+                </item>
                 <item>
                     <key> <string>field_id</string> </key>
                     <value> <string>my_date_time_field</string> </value>

bt5/erp5_dms/bt/revision

-1265
+1266
\ No newline at end of file