diff --git a/app/routes.py b/app/routes.py
index 9e4c974..d21d393 100644
--- a/app/routes.py
+++ b/app/routes.py
@@ -159,10 +159,13 @@ def iban(iban) -> str:
                     {'key':'metatype', 'value': 'rule'}
                 )
                 tag_rules = [r.get('name') for r in tag_rules if r.get('name')]
+                tag_rules.sort()
+
                 cat_rules = parent.db_handler.filter_metadata(
                     {'key':'metatype', 'value': 'category'}
                 )
                 cat_rules = [r.get('name') for r in cat_rules if r.get('name')]
+                cat_rules.sort()
 
                 # All distinct Tags
                 # (must be filtered on our own because TinyDB doesn't support 'distinct' queries)
@@ -390,6 +393,25 @@ def getMeta(rule_filter):
                 meta = parent.db_handler.filter_metadata(condition=None)
                 return meta, 200
 
+            @current_app.route('/api/deleteMeta/', methods=['DELETE'], defaults={'uuid':None})
+            @current_app.route('/api/deleteMeta/<uuid>', methods=['DELETE'])
+            def deleteMeta(uuid):
+                """
+                Löschen von Metadaten anhand der ID
+                Args (uri):
+                    uuid, str: ID der zu löschenden Metadaten
+                Returns:
+                    json: Informationen zum Ergebnis der Löschaktion
+                """
+                if not uuid:
+                    return {'error': 'No ID provided'}, 400
+
+                r = parent.db_handler.delete_metadata(uuid)
+                if not r.get('deleted'):
+                    return {'error': f'No data deleted: {r.get("error")}'}, 400
+
+                return r, 200
+
             @current_app.route('/api/upload/<iban>', methods=['POST'])
             def uploadIban(iban):
                 """
diff --git a/app/static/js/functions.js b/app/static/js/functions.js
index d5e37cf..5e2ddce 100644
--- a/app/static/js/functions.js
+++ b/app/static/js/functions.js
@@ -446,10 +446,13 @@ function apiGet(sub, params, callback, method = "GET") {
  * @param {string} sub - The API endpoint to append to the base URL.
  * @param {Object} params - An object containing key-value pairs to be sent as query parameters.
  * @param {function} callback - A callback function to handle the response.
- * 								Receives the response text and status code as arguments.
+ * 							Receives the response text and status code as arguments.
  * @param {boolean} [isFile=false] - A switch to enable special file upload handling.
+ * @param {string} [force_method] - The HTTP method to use for the request (e.g., "POST", "PUT").
+ * 							If not provided, it will be determined based on the presence of
+ * 							a file in the parameters.
  */
-function apiSubmit(sub, params, callback, isFile = false) {
+function apiSubmit(sub, params, callback, isFile = false, force_method = undefined) {
 	const ajax = createAjax(callback);
 	let method;
 	let request_uri;
@@ -466,6 +469,11 @@ function apiSubmit(sub, params, callback, isFile = false) {
 		request_uri = JSON.stringify(params);
 	}
 
+	if (typeof force_method != "undefined") {
+		console.info("Setting method to", force_method.toUpperCase())
+		method = force_method.toUpperCase();
+	}
+
 	ajax.open(method, "/api/" + sub, true);
 
 	if (method != "POST") {
diff --git a/app/static/js/index.js b/app/static/js/index.js
index f9b506f..2687e5a 100644
--- a/app/static/js/index.js
+++ b/app/static/js/index.js
@@ -190,13 +190,35 @@ function saveSetting() {
             showAjaxError(error, response);
 
         } else {
-            alert('Einstellungen gespeichert' + response)
+            alert('Einstellungen gespeichert (' + response.inserted + ')');
             result_text.value = '';
 
         }
     }, false);
 }
 
+/**
+ * Delete a value from Metadate by uuid.
+ * The key is selected via the select input element 'read-setting'.
+ */ 
+function deleteSetting() {
+    const setting_uuid = document.getElementById('read-setting').value;
+    if (!setting_uuid) {
+        alert('Kein Name einer Einstellung angegeben!');
+        return;
+    }
+
+    apiSubmit('deleteMeta/' + setting_uuid, {}, function (response, error) {
+        if (error) {
+            showAjaxError(error, response);
+
+        } else {
+            alert('Einstellung gelöscht !');
+            window.location.reload();
+
+        }
+    }, false, 'DELETE');
+}
 
 // ----------------------------------------------------------------------------
 // -- API Functions -----------------------------------------------------------
diff --git a/app/templates/index.html b/app/templates/index.html
index 123ac79..e77dd8e 100644
--- a/app/templates/index.html
+++ b/app/templates/index.html
@@ -231,9 +231,13 @@ <h2>Settings</h2>
                 </select>
                 <textarea id="set-setting" placeholder="Setting Wert" rows="10" cols="15"></textarea>
             </p>
+            <p>
+                <small>Settings ohne <i>uuid</i> werden als neuer Eintrag erstellt.</small>
+            </p>
             <footer dir="rtl">
                 <button class="secondary" onclick="loadSetting()">Laden</button>
                 <button onclick="saveSetting()">Speichern</button>
+                <button class="delete" onclick="deleteSetting()">Löschen</button>
             </footer>
         </details>
     </article>
diff --git a/handler/BaseDb.py b/handler/BaseDb.py
index 1854d82..4b7f078 100644
--- a/handler/BaseDb.py
+++ b/handler/BaseDb.py
@@ -321,6 +321,17 @@ def set_metadata(self, entry: dict, overwrite: bool=True):
         """
         raise NotImplementedError()
 
+    def delete_metadata(self, uuid: str):
+        """
+        Löscht Metadaten aus der Datenbank.
+
+        Args:
+            uuid (str): Unique ID (key) der zu löschenden Metadaten.
+        Returns:
+            dict: Informationen über den Löschvorgang.
+        """
+        raise NotImplementedError()
+
     def get_group_ibans(self, group: str, check_before: bool=False):
         """
         Ruft die Liste von IBANs einer Gruppe aus der Datenbank ab.
diff --git a/handler/MongoDb.py b/handler/MongoDb.py
index 0f8e079..1148541 100644
--- a/handler/MongoDb.py
+++ b/handler/MongoDb.py
@@ -257,6 +257,11 @@ def set_metadata(self, entry, overwrite=True):
 
         return {'inserted': 0}
 
+    def delete_metadata(self, uuid):
+        collection = self.connection['metadata']
+        delete_result = collection.delete_one({'uuid': uuid})
+        return {'deleted': delete_result.deleted_count}
+
     def _form_condition(self, condition):
         """
         Erstellt aus einem Condition-Dict eine entsprechende Query
@@ -300,7 +305,12 @@ def _form_condition(self, condition):
         if condition_method == 'all':
             stmt = {'$all': condition.get('value')}
         if condition_method == 'exact':
-            stmt = {'$all': condition.get('value'), '$size': len(condition.get('value'))}
+            if not condition.get('value'):
+                # Empty lists
+                stmt = {'$size': 0}
+            else:
+                # Lists with exact members
+                stmt = {'$all': condition.get('value')}
 
         # Nested or Plain Key
         condition_key = condition.get('key')
diff --git a/handler/TinyDb.py b/handler/TinyDb.py
index 1b50186..84be64d 100644
--- a/handler/TinyDb.py
+++ b/handler/TinyDb.py
@@ -310,6 +310,11 @@ def set_metadata(self, entry, overwrite=True):
 
         return {'inserted': 0}
 
+    def delete_metadata(self, uuid):
+        collection = self.connection.table('metadata')
+        deleted_ids = collection.remove(Query().uuid == uuid)
+        return {'deleted': len(deleted_ids)}
+
     def _form_where(self, condition):
         """
         Erstellt aus einem Condition-Dict eine entsprechende Query