Validation of details facet before update https://fedorahosted.org/freeipa/ticket/1676 The ticket is a duplicate of server error, but it revealed few UI errors.

Newly performs validation of details facet before update. If validation fails, notification dialog is shown and command isn't executed.
Fixed integer minimum and maximum value checking.
Read-only and non-writable fields are no longer considered required.

ipalib/plugins/internal.py

@@ -355,12 +355,14 @@ class i18n_messages(Command):
             "confirmation":_("Confirmation"),
             "dirty_message":_("This page has unsaved changes. Please save or revert."),
             "dirty_title":_("Unsaved Changes"),
-            "hide_details":_("Hide details"),\
+            "hide_details":_("Hide details"),
             "redirection":_("Redirection"),
             "remove_empty":_("Select entries to be removed."),
             "remove_title":_("Remove ${entity}"),
             "prospective":_("Prospective"),
-            "show_details":_("Show details"),\
+            "show_details":_("Show details"),
+            "validation_title":_("Validation error"),
+            "validation_message":_("Input form contains invalid or missing values."),
             },
         "facet_groups": {
             "managedby":_("${primary_key} is managed by:"),