diff --git a/sql/cambios.sql b/sql/cambios.sql
index 971caf3b3..31452c033 100644
--- a/sql/cambios.sql
+++ b/sql/cambios.sql
@@ -11681,8 +11681,14 @@ ALTER TABLE surveys ADD PRIMARY KEY(SvyCod);
 DROP INDEX SvyCod ON surveys;
 ALTER TABLE surveys ADD UNIQUE INDEX(Scope,Cod);
 
+----- Listar dominios usados pero aún no contemplados en la lista de dominios permitidos -----
+
+SELECT SUBSTRING_INDEX(E_mail,'@',-1) AS mail_domain,COUNT(*) AS N FROM usr_emails WHERE SUBSTRING_INDEX(E_mail,'@',-1) NOT IN (SELECT Domain COLLATE latin1_general_ci FROM mail_domains) GROUP BY mail_domain ORDER BY N DESC;
 
 ----- TODO: Eliminar columnas sin uso en futuras versiones -----
 
 ALTER TABLE surveys DROP COLUMN DegCod;
 ALTER TABLE surveys DROP COLUMN CrsCod;
+
+
+
diff --git a/swad_account.c b/swad_account.c
index 246311ea0..231e88363 100644
--- a/swad_account.c
+++ b/swad_account.c
@@ -149,7 +149,8 @@ static void Acc_ShowFormCheckIfIHaveAccount (const char *Title)
    fprintf (Gbl.F.Out,"<label class=\"%s\">"
 		      "%s:&nbsp;"
 		      "<input type=\"text\" name=\"ID\""
-		      " size=\"18\" maxlength=\"%u\" value=\"\" />"
+		      " size=\"18\" maxlength=\"%u\" value=\"\""
+		      " required=\"required\" />"
 		      "</label>",
 	    The_ClassForm[Gbl.Prefs.Theme],Txt_ID,
 	    ID_MAX_LENGTH_USR_ID);
diff --git a/swad_changelog.h b/swad_changelog.h
index 2ffafc925..6a19d0d06 100644
--- a/swad_changelog.h
+++ b/swad_changelog.h
@@ -186,21 +186,24 @@
 // TODO: Fix bug: When registering an administrator, the user's name changes are ignored
 
 // TODO: In list of indicators, alternate background colors also when not all the number of indicators are selected
-// TODO: In "Antes de crear una nueva cuenta, compruebe si ya le han inscrito con su ID", force filling of ID
 
 // TODO: Ver solución de Guillermo Gómez Trenado cuando se pulsa con el botón derecho para abrir una descarga en otra ventana
 
+// TODO: En los detalles de asistencia debería salir la fecha de cada sesión
+// TODO: Botón "Inscribir profesores" cuando no hay profesores --> Botón "Inscribir profesor/a"
+
 /*****************************************************************************/
 /****************************** Public constants *****************************/
 /*****************************************************************************/
 
-#define Log_PLATFORM_VERSION	"SWAD 16.135.3 (2017-02-09)"
+#define Log_PLATFORM_VERSION	"SWAD 16.135.4 (2017-02-11)"
 #define CSS_FILE		"swad16.135.css"
 #define JS_FILE			"swad16.123.js"
 
 // Number of lines (includes comments but not blank lines) has been got with the following command:
 // nl swad*.c swad*.h css/swad*.css py/swad*.py js/swad*.js soap/swad*?.h sql/swad*.sql | tail -1
 /*
+        Version 16.135.4: Feb 11, 2017	Force filling of ID in form to check if account exists. (212502 lines)
         Version 16.135.3: Feb 09, 2017	Code refactoring related to enrolling teachers and students. (212499 lines)
         Version 16.135.2: Feb 09, 2017	Changes in layout of stats on degrees. (212456 lines)
         Version 16.135.1: Feb 09, 2017	Link from current date to calendar depending on scope. (212461 lines)