diff --git a/datamodels/2.x/itop-oauth-client/datamodel.itop-oauth-client.xml b/datamodels/2.x/itop-oauth-client/datamodel.itop-oauth-client.xml
index fb01d1d82..e7cd66a27 100644
--- a/datamodels/2.x/itop-oauth-client/datamodel.itop-oauth-client.xml
+++ b/datamodels/2.x/itop-oauth-client/datamodel.itop-oauth-client.xml
@@ -484,6 +484,21 @@ HTML
   }
             ]]></code>
         </method>
+        <method id="OnUpdate">
+          <static>false</static>
+          <access>protected</access>
+          <type>Overload-DBObject</type>
+          <code><![CDATA[
+      protected function OnUpdate()
+      {
+		    $aChanges = $this->ListChanges();
+        if (array_key_exists('client_id', $aChanges) || array_key_exists('client_secret', $aChanges) || array_key_exists('redirect_url', $aChanges)) {
+            $sMessage = Dict::S('itop-oauth-client:Message:RegenerateToken');
+            self::SetSessionMessage(get_class($this), $this->GetKey(), 'RegenerateToken', $sMessage, 'info', 1);
+        }
+      }
+           ]]></code>
+        </method>
         <method id="DoCheckToWrite">
           <static>false</static>
           <access>public</access>
@@ -493,15 +508,13 @@ HTML
 		parent::DoCheckToWrite();
 
 		$aChanges = $this->ListChanges();
-		if (array_key_exists('name', $aChanges) || array_key_exists('used_for_smtp', $aChanges))
-		{
+		if (array_key_exists('name', $aChanges) || array_key_exists('used_for_smtp', $aChanges)) {
 			$sNewName = $this->Get('name');
 			$sNewUseForSMTP = $this->Get('used_for_smtp');
 			if ($sNewUseForSMTP == 'yes') {
         $oSearch = DBObjectSearch::FromOQL_AllData("SELECT OAuthClientGoogle WHERE name = :newname AND used_for_smtp = :newuseforsmtp AND id != :id UNION SELECT OAuthClientAzure WHERE name = :newname AND used_for_smtp = :newuseforsmtp AND id != :id");
         $oSet = new DBObjectSet($oSearch, array(), ['id' => $this->GetKey(), 'newname' => $sNewName, 'newuseforsmtp' => $sNewUseForSMTP]);
-        if ($oSet->Count() > 0)
-        {
+        if ($oSet->Count() > 0) {
             $this->m_aCheckIssues[] = Dict::Format('OAuthClient:Name/UseForSMTPMustBeUnique', $sNewName, $sNewUseForSMTP);
         }
 			}
@@ -543,7 +556,6 @@ HTML
   {
     switch ($sAttCode) {
         case 'provider':
-        case 'redirect_url':
         case 'used_scope':
             return OPT_ATT_READONLY;
     }
@@ -561,7 +573,6 @@ HTML
   {
     switch ($sAttCode) {
         case 'provider':
-        case 'redirect_url':
         case 'used_scope':
             return OPT_ATT_READONLY;
     }
@@ -856,7 +867,6 @@ HTML
 	{
     switch ($sAttCode) {
         case 'provider':
-        case 'redirect_url':
         case 'used_scope':
             return OPT_ATT_READONLY;
     }
@@ -874,7 +884,6 @@ HTML
 	{
     switch ($sAttCode) {
         case 'provider':
-        case 'redirect_url':
         case 'used_scope':
             return OPT_ATT_READONLY;
     }
@@ -919,6 +928,21 @@ HTML
   }
             ]]></code>
         </method>
+        <method id="OnUpdate">
+          <static>false</static>
+          <access>protected</access>
+          <type>Overload-DBObject</type>
+          <code><![CDATA[
+      protected function OnUpdate()
+      {
+		    $aChanges = $this->ListChanges();
+        if (array_key_exists('client_id', $aChanges) || array_key_exists('client_secret', $aChanges) || array_key_exists('redirect_url', $aChanges)) {
+            $sMessage = Dict::S('itop-oauth-client:Message:RegenerateToken');
+            self::SetSessionMessage(get_class($this), $this->GetKey(), 'RegenerateToken', $sMessage, 'info', 1);
+        }
+      }
+           ]]></code>
+        </method>
       </methods>
     </class>
   </classes>
diff --git a/datamodels/2.x/itop-oauth-client/en.dict.itop-oauth-client.php b/datamodels/2.x/itop-oauth-client/en.dict.itop-oauth-client.php
index 5c3a66132..b64e1c838 100644
--- a/datamodels/2.x/itop-oauth-client/en.dict.itop-oauth-client.php
+++ b/datamodels/2.x/itop-oauth-client/en.dict.itop-oauth-client.php
@@ -19,6 +19,7 @@ Dict::Add('EN US', 'English', 'English', [
 	'itop-oauth-client:TestSMTP' => 'Email send test',
 	'itop-oauth-client:MissingOAuthClient' => 'Missing Oauth client for user name %1$s',
 	'itop-oauth-client:Message:MissingToken' => 'Generate access token before using this OAuth client',
+	'itop-oauth-client:Message:RegenerateToken' => 'Regenerate access token to to take into account the changes',
 	'itop-oauth-client:Message:TokenCreated' => 'Access token created',
 	'itop-oauth-client:Message:TokenRecreated' => 'Access token regenerated',
 	'itop-oauth-client:Message:TokenError' => 'Access token not generated due to server error',
@@ -58,7 +59,11 @@ Dict::Add('EN US', 'English', 'English', [
 	'Class:OAuthClient/Attribute:token_expiration' => 'Access token expiration',
 	'Class:OAuthClient/Attribute:token_expiration+' => '',
 	'Class:OAuthClient/Attribute:redirect_url' => 'Redirect url',
-	'Class:OAuthClient/Attribute:redirect_url+' => 'This url must be copied in the OAuth2 configuration of the provider',
+	'Class:OAuthClient/Attribute:redirect_url+' => <<<EOF
+This url must be copied in the OAuth2 configuration of the provider
+Erase the field to recalculate default value
+EOF
+,
 	'Class:OAuthClient/Attribute:mailbox_list' => 'Mailbox list',
 	'Class:OAuthClient/Attribute:mailbox_list+' => '',
 ]);
diff --git a/datamodels/2.x/itop-oauth-client/fr.dict.itop-oauth-client.php b/datamodels/2.x/itop-oauth-client/fr.dict.itop-oauth-client.php
index 339538d52..b747f91e0 100644
--- a/datamodels/2.x/itop-oauth-client/fr.dict.itop-oauth-client.php
+++ b/datamodels/2.x/itop-oauth-client/fr.dict.itop-oauth-client.php
@@ -19,6 +19,7 @@ Dict::Add('FR FR', 'French', 'Français', [
 	'itop-oauth-client:TestSMTP' => 'Tester l\'envoi de mail',
 	'itop-oauth-client:MissingOAuthClient' => 'Il n\'y a pas de client OAuth pour l\'utilisateur %1$s',
 	'itop-oauth-client:Message:MissingToken' => 'Générez le jeton d\'accès avant d\'utiliser ce client OAuth',
+	'itop-oauth-client:Message:RegenerateToken' => 'Re-générez le jeton d\'accès prendre en compte les modifications',
 	'itop-oauth-client:Message:TokenCreated' => 'Le jeton d\'accès à été créé',
 	'itop-oauth-client:Message:TokenRecreated' => 'Le jeton d\'accès à été renouvelé',
 	'itop-oauth-client:Message:TokenError' => 'Le jeton d\'accès n\'a pas été généré à cause d`une erreur serveur',
@@ -58,7 +59,11 @@ Dict::Add('FR FR', 'French', 'Français', [
 	'Class:OAuthClient/Attribute:token_expiration' => 'Date d\'expiration du jeton d\'accès',
 	'Class:OAuthClient/Attribute:token_expiration+' => '',
 	'Class:OAuthClient/Attribute:redirect_url' => 'URL de redirection',
-	'Class:OAuthClient/Attribute:redirect_url+' => 'Cet URL doit être recopié dans la configuration OAuth2 de votre fournisseur',
+	'Class:OAuthClient/Attribute:redirect_url+' => <<<EOF
+Cet URL doit être recopiée dans la configuration OAuth2 de votre fournisseur
+Pour recalculer la valeur par défaut, il faut effacer le champ
+EOF
+,
 	'Class:OAuthClient/Attribute:mailbox_list' => 'Mailbox list',
 	'Class:OAuthClient/Attribute:mailbox_list+' => '',
 ]);