diff --git a/application/controllers/system/issues/IssuesKonfiguration.php b/application/controllers/system/issues/IssuesKonfiguration.php
index f6b3ff556..a19a2a93b 100644
--- a/application/controllers/system/issues/IssuesKonfiguration.php
+++ b/application/controllers/system/issues/IssuesKonfiguration.php
@@ -18,7 +18,8 @@ class IssuesKonfiguration extends Auth_Controller
 				'getApps' => 'admin:r',
 				'getFehlerKonfigurationByApp' => 'admin:r',
 				'saveFehlerKonfiguration' => 'admin:rw',
-				'deleteKonfiguration' => 'admin:rw'
+				'deleteKonfiguration' => 'admin:rw',
+				'deleteKonfigurationsWerte' => 'admin:rw'
 			)
 		);
 
@@ -204,6 +205,73 @@ class IssuesKonfiguration extends Auth_Controller
 		$this->outputJson($result);
 	}
 
+	/**
+	 * Deletes values of a Konfiguration.
+	 */
+	public function deleteKonfigurationsWerte()
+	{
+		$konfigurationstyp_kurzbz = $this->input->post('konfigurationstyp_kurzbz');
+		$fehlercode = $this->input->post('fehlercode');
+		$konfigurationsWert = $this->input->post('konfigurationsWert');
+
+		// check if Konfigurationstyp correctly passed
+		if (isEmptyString($konfigurationstyp_kurzbz)) $this->terminateWithJsonError($this->p->t('fehlermonitoring', 'ungueltigerKonfigurationstyp'));
+
+		// check if fehlercode correctly passed
+		if (isEmptyString($fehlercode)) $this->terminateWithJsonError($this->p->t('fehlermonitoring', 'fehlercodeFehlt'));
+
+		// separate by semicolon if multiple values passed
+		$konfigurationsWert = explode(';', $konfigurationsWert);
+
+		// check if konfiguration already set for the fehlercode
+		$this->FehlerkonfigurationModel->addSelect('konfiguration');
+		$fehlerkonfigurationRes = $this->FehlerkonfigurationModel->loadWhere(
+			array(
+				'konfigurationstyp_kurzbz' => $konfigurationstyp_kurzbz,
+				'fehlercode' => $fehlercode
+			)
+		);
+
+		if (!hasData($fehlerkonfigurationRes)) $this->terminateWithJsonError($this->p->t('fehlermonitoring', 'fehlerFehlerKonfigurationLaden'));
+
+		// if konfiguration exists, update values
+		if (hasData($fehlerkonfigurationRes))
+		{
+			$fehlerkonfiguration = getData($fehlerkonfigurationRes);
+
+			$existingKonf = json_decode($fehlerkonfiguration[0]->konfiguration);
+
+			if (!$existingKonf) $this->terminateWithJsonError($this->p->t('fehlermonitoring', 'fehlerJsonDekodierung'));
+
+			if (!is_array($existingKonf)) $existingKonf = array($existingKonf);
+
+			$newKonfArr = array_values(array_diff($existingKonf, $konfigurationsWert));
+
+			// if no konfiguration values left, delete whole entry
+			if (isEmptyArray($newKonfArr))
+			{
+				$this->outputJson(
+					$this->FehlerkonfigurationModel->delete(
+						array('konfigurationstyp_kurzbz' => $konfigurationstyp_kurzbz, 'fehlercode' => $fehlercode)
+					)
+				);
+			}
+			else
+			{
+				$newKonf = json_encode($newKonfArr);
+				if (!$newKonf) $this->terminateWithJsonError("error when encoding JSON");
+
+				// if there are still values, delete only part of the konfiguration
+				$this->outputJson(
+					$this->FehlerkonfigurationModel->update(
+						array('konfigurationstyp_kurzbz' => $konfigurationstyp_kurzbz, 'fehlercode' => $fehlercode),
+						array('konfiguration' => $newKonf, 'updateamum' => 'NOW()', 'updatevon' => $this->_uid)
+					)
+				);
+			}
+		}
+	}
+
 	/**
 	 * Deletes a Konfiguration.
 	 */
diff --git a/application/views/system/issues/issuesKonfiguration.php b/application/views/system/issues/issuesKonfiguration.php
index 8b07157d2..dbd62a26a 100644
--- a/application/views/system/issues/issuesKonfiguration.php
+++ b/application/views/system/issues/issuesKonfiguration.php
@@ -82,6 +82,9 @@ $this->load->view(
 							<button class="btn btn-default" id="assignKonfiguration">
 								<?php echo $this->p->t('fehlermonitoring', 'konfigurationswertZuweisen') ?>
 							</button>
+							<button class="btn btn-default" id="deleteKonfiguration">
+								<?php echo $this->p->t('fehlermonitoring', 'konfigurationswertLoeschen') ?>
+							</button>
 						</div>
 					</div>
 				</div>
diff --git a/public/js/issues/issuesKonfiguration.js b/public/js/issues/issuesKonfiguration.js
index 9e0ebaf4d..f2e7aa5c3 100644
--- a/public/js/issues/issuesKonfiguration.js
+++ b/public/js/issues/issuesKonfiguration.js
@@ -144,6 +144,34 @@ var IssuesKonfiguration = {
 			}
 		);
 	},
+	deleteKonfigurationsWerte: function(konfigurationstyp_kurzbz, fehlercode, konfigurationsWert)
+	{
+		FHC_AjaxClient.ajaxCallPost(
+			'system/issues/IssuesKonfiguration/deleteKonfigurationsWerte',
+			{
+				konfigurationstyp_kurzbz: konfigurationstyp_kurzbz,
+				fehlercode: fehlercode,
+				konfigurationsWert: konfigurationsWert
+			},
+			{
+				successCallback: function(data, textStatus, jqXHR) {
+					if (FHC_AjaxClient.hasData(data))
+					{
+						FHC_DialogLib.alertSuccess(FHC_PhrasesLib.t('fehlermonitoring', 'konfigurationGeloescht'))
+						// reload dataset to see change
+						IssuesKonfiguration._reloadKonfigurationOverview();
+					}
+					else
+					{
+						FHC_DialogLib.alertError(FHC_PhrasesLib.t('fehlermonitoring', 'konfigurationGeloeschtFehler'));
+					}
+				},
+				errorCallback: function(jqXHR, textStatus, errorThrown) {
+					FHC_DialogLib.alertError(textStatus);
+				}
+			}
+		);
+	},
 	deleteKonfiguration: function(konfigurationstyp_kurzbz, fehlercode)
 	{
 		FHC_AjaxClient.ajaxCallPost(
@@ -229,7 +257,7 @@ $(document).ready(function() {
 		}
 	);
 
-	// get new fehlercodes each time app is changed
+	// set assign configuration event
 	$("#assignKonfiguration").click(
 		function()
 		{
@@ -241,6 +269,18 @@ $(document).ready(function() {
 		}
 	);
 
+	// set delete configuration event
+	$("#deleteKonfiguration").click(
+		function()
+		{
+			IssuesKonfiguration.deleteKonfigurationsWerte(
+				$("#"+FEHLERKONFIGURATIONSTYP_DROPDOWN_ID).val(),
+				$("#"+FEHLERCODE_DROPDOWN_ID).val(),
+				$("#konfigurationsWert").val()
+			);
+		}
+	);
+
 	// set events for showing info modals
 	$("#fehlercodeInfoIcon").click(
 		function()
diff --git a/system/phrasesupdate.php b/system/phrasesupdate.php
index 0bc748c80..28735e07f 100644
--- a/system/phrasesupdate.php
+++ b/system/phrasesupdate.php
@@ -17897,7 +17897,7 @@ array(
 			),
 			array(
 				'sprache' => 'English',
-				'text' => 'Invalid configuration value for data type {1}, special characters not allowed',
+				'text' => 'Invalid configuration value for data type {0}, special characters not allowed',
 				'description' => '',
 				'insertvon' => 'system'
 			)
@@ -18123,6 +18123,26 @@ array(
 			)
 		)
 	),
+	array(
+		'app' => 'core',
+		'category' => 'fehlermonitoring',
+		'phrase' => 'konfigurationswertLoeschen',
+		'insertvon' => 'system',
+		'phrases' => array(
+			array(
+				'sprache' => 'German',
+				'text' => 'Konfigurationswert(e) löschen',
+				'description' => '',
+				'insertvon' => 'system'
+			),
+			array(
+				'sprache' => 'English',
+				'text' => 'Delete configuration value(s)',
+				'description' => '',
+				'insertvon' => 'system'
+			)
+		)
+	),
 );