diff --git a/source/ubl-settings-usergroups.c b/source/ubl-settings-usergroups.c
index b3c0d91..484b89e 100644
--- a/source/ubl-settings-usergroups.c
+++ b/source/ubl-settings-usergroups.c
@@ -1370,6 +1370,27 @@ void on_group_save(GtkWidget *self, dictionary *dict){
 		}
 	}
 	
+		int config_size=0;
+		int final_size=0;
+		config_str config_users = yon_config_get_all_by_key(USERADD_SEARCH_macro,&config_size);
+		yon_char_parsed_prepend_strings(config_users,config_size,":");
+		config_str final = yon_char_parsed_merge(main_config.groups,main_config.groups_size,config_users,config_size,&final_size);
+
+		int found=0;
+		char *uid_string = (char*)gtk_entry_get_text(GTK_ENTRY(window->userUIDEntry));
+		for (int i=0;i<final_size;i++){
+			int parsed_size;
+			config_str parsed = yon_char_parse(final[i],&parsed_size,":");
+			printf("%s / %s\n",parsed[2],uid_string);
+			if (parsed_size>1&&!strcmp(parsed[2],uid_string)&&strcmp(parsed[2],window->last_gid)) found = 1;
+			if (parsed_size) yon_char_parsed_free(parsed,parsed_size);
+		}
+		if (found){
+			yon_ubl_status_box_spawn(GTK_CONTAINER(window->StatusBox),GID_ALREADY_EXIST_LABEL,5,BACKGROUND_IMAGE_FAIL_TYPE);
+			yon_ubl_status_highlight_incorrect(window->userUIDEntry);
+			return;
+		}
+
 	group_name = (char*)gtk_entry_get_text(GTK_ENTRY(window->userLoginEntry));
 	if (group_name[0]>'0'&&group_name[0]<'9'){
 			yon_ubl_status_box_spawn(GTK_CONTAINER(window->StatusBox),GROUP_BEGINS_WITH_DIGIT_LABEL,5,BACKGROUND_IMAGE_FAIL_TYPE);
@@ -1962,10 +1983,27 @@ void on_user_save(GtkWidget *self, dictionary *dict){
 	if (uid_auto_active){
 		uid_string="";
 	} else {
+		int config_size=0;
+		int final_size=0;
+		config_str config_users = yon_config_get_all_by_key(USERADD_SEARCH_macro,&config_size);
+		yon_char_parsed_prepend_strings(config_users,config_size,":");
+		config_str final = yon_char_parsed_merge(main_config.users,main_config.users_size,config_users,config_size,&final_size);
+
+		int found=0;
 		uid_string = (char*)gtk_entry_get_text(GTK_ENTRY(window->userUIDEntry));
-		if (yon_char_is_empty(uid_string)){
+		for (int i=0;i<final_size;i++){
+			int parsed_size;
+			config_str parsed = yon_char_parse(final[i],&parsed_size,":");
+			if (parsed_size>1&&!strcmp(parsed[2],uid_string)&&strcmp(parsed[2],window->last_uid)) found = 1;
+			if (parsed_size) yon_char_parsed_free(parsed,parsed_size);
+		}
+		if (found){
+			yon_ubl_status_box_spawn(GTK_CONTAINER(window->StatusBox),UID_ALREADY_EXIST_LABEL,5,BACKGROUND_IMAGE_FAIL_TYPE);
+			yon_ubl_status_highlight_incorrect(window->userUIDEntry);
+			return;
+		}
 
-			
+		if (yon_char_is_empty(uid_string)){
 			yon_ubl_status_box_spawn(GTK_CONTAINER(window->StatusBox),EMPTY_IMPORTANT_LABEL,5,BACKGROUND_IMAGE_FAIL_TYPE);
 			yon_ubl_status_highlight_incorrect(window->userUIDEntry);
 			return;
diff --git a/source/ubl-strings.h b/source/ubl-strings.h
index b9eeb41..72191a5 100644
--- a/source/ubl-strings.h
+++ b/source/ubl-strings.h
@@ -184,6 +184,9 @@
 
 #define PASSWORD_NO_SET_LABEL _("Not specified")
 
+#define UID_ALREADY_EXIST_LABEL _("UID already busy")
+#define GID_ALREADY_EXIST_LABEL _("GID already busy")
+
 //ubl-settings-usergroups-password.glade
 #define PASSWORD_REPEAT_LABEL _("Repeat password:")
 #define PASSWORD_HASH_LABEL _("Password hash:")
diff --git a/ubl-settings-usergroups-group.glade b/ubl-settings-usergroups-group.glade
index f66823f..06819cc 100644
--- a/ubl-settings-usergroups-group.glade
+++ b/ubl-settings-usergroups-group.glade
@@ -40,7 +40,7 @@
               <object class="GtkTreeView" id="GroupsTree">
                 <property name="visible">True</property>
                 <property name="can-focus">True</property>
-                <property name="search-column">1</property>
+                <property name="search-column">2</property>
                 <property name="enable-grid-lines">vertical</property>
                 <child internal-child="selection">
                   <object class="GtkTreeSelection">
diff --git a/ubl-settings-usergroups.pot b/ubl-settings-usergroups.pot
index 3156e54..5c47b2c 100644
--- a/ubl-settings-usergroups.pot
+++ b/ubl-settings-usergroups.pot
@@ -702,4 +702,10 @@ msgid "Are you sure want to delete group"
 msgstr ""
 
 msgid "Are you sure want to delete user"
+msgstr ""
+
+msgid "UID already busy"
+msgstr ""
+
+msgid "GID already busy"
 msgstr ""
\ No newline at end of file
diff --git a/ubl-settings-usergroups_ru.po b/ubl-settings-usergroups_ru.po
index 709c47c..5197919 100644
--- a/ubl-settings-usergroups_ru.po
+++ b/ubl-settings-usergroups_ru.po
@@ -742,3 +742,10 @@ msgstr "Домашний каталог"
 #: source/ubl-strings.h:207
 msgid "Delete home directory"
 msgstr "Удалить домашний каталог"
+
+
+msgid "UID already busy"
+msgstr "UID уже существует"
+
+msgid "GID already busy"
+msgstr "GID уже существует"
\ No newline at end of file