diff --git a/functionsophalglpi.php b/functionsophalglpi.php
index ea329724..d5744aea 100644
--- a/functionsophalglpi.php
+++ b/functionsophalglpi.php
@@ -714,7 +714,7 @@
 
 						from glpi_tickets 
 
-				where id = ?' LIMIT 1";
+				where id = ? LIMIT 1";
 
 		$stmt = $DB->prepare($query);
 
@@ -1106,7 +1106,7 @@
 	
 	
 	
-	// closing hr tickets after 1 day 
+	// closing hr tickets after 2 days
 	function close_hr_tickets(){			
 		global $DB;	
 		$stmt = $DB->prepare("update glpi_tickets set status = 6 , closedate = now() where id in ( SELECT 
@@ -1122,3 +1122,22 @@
 		return $stmt->execute();	
 	}
 
+	function getMaxTicketValidationDateTime(DateTime $requisition_date): DateTime {
+		$weekday = (int) $requisition_date->format('N'); // 1 (Mon) to 7 (Sun)
+	
+		if ($weekday === 5) { // Friday
+			$sunday = clone $requisition_date;
+			$sunday->modify('+2 days')->setTime(0, 0);
+			return $sunday->modify('+48 hours');
+		} elseif ($weekday === 6) { // Saturday
+			$sunday = clone $requisition_date;
+			$sunday->modify('+1 day')->setTime(0, 0);
+			return $sunday->modify('+48 hours');
+		} elseif (in_array($weekday, [3, 4])) { // Wednesday or Thursday
+			$result = clone $requisition_date;
+			return $result->modify('+96 hours');
+		} else {
+			$result = clone $requisition_date;
+			return $result->modify('+48 hours');
+		}
+	}
diff --git a/inc/commonitilobject.class.php b/inc/commonitilobject.class.php
index 7db11f84..cd9e8e0b 100644
--- a/inc/commonitilobject.class.php
+++ b/inc/commonitilobject.class.php
@@ -7385,21 +7385,40 @@ abstract class CommonITILObject extends CommonDBTM {
             echo "</div>";
          }
          
-         //sophal block validation =>  
-		 //clôturer la modification  du validation (autorisation absence,entree .......) 48h aprees l envoi
-		 /*
+      
 		 if (strpos($item['type'], 'Validation') > 0 &&
             (isset($item_i['can_answer']) && $item_i['can_answer'])) {
 				
-				 $detail_ticket = get_detail_ticket($_GET['id']);								 
-				 $itilcategories_ids = array(15, 16 , 12, 38 , 36);
-				 $date_fin = date('Y-m-d H:i:s',strtotime('+48 hour',strtotime($detail_ticket['date'])));
-				 $courant_date = date('Y-m-d H:i:s');
-				 	
-				 if(in_array($detail_ticket['itilcategories_id'],$itilcategories_ids)){
-					  if($date_fin <= $courant_date){
-							$item_i['can_answer'] = 0;
-							$validateur_res = explode("=>", $item_i['content']);
+				   // sophal
+		         // prevent validators to update validations after 48 hours from tickets creation ( excluding weekends )
+               $detail_ticket = get_detail_ticket($_GET['id']);								 
+               $itilcategories_ids = array(15, 16 , 12, 38 , 36, 72);
+               $requisition_date = new DateTime($detail_ticket['requisition_date']);
+               $max_date = getMaxTicketValidationDateTime($requisition_date);
+
+               $courant_date = new DateTime(); // current datetime
+               
+				   if (!(in_array($detail_ticket['itilcategories_id'], $itilcategories_ids))
+                     || $max_date >= $courant_date) {
+
+
+                     $form_url = $item['type']::getFormURL();
+                     echo "<form id='validationanswers_id_{$item_i['id']}' class='center' action='$form_url' method='post'>";
+                     echo Html::hidden('id', ['value' => $item_i['id']]);
+                     echo Html::hidden('users_id_validate', ['value' => $item_i['users_id_validate']]);
+                     Html::textarea([
+                        'name'   => 'comment_validation',
+                        'rows'   => 5
+                     ]);
+                     echo "<button type='submit' class='submit approve' name='approval_action' value='approve'>";
+                     echo "<i class='far fa-thumbs-up'></i>&nbsp;&nbsp;".__('Approve')."</button>";
+
+                     echo "<button type='submit' class='submit refuse very_small_space' name='approval_action' value='refuse'>";
+                     echo "<i class='far fa-thumbs-down'></i>&nbsp;&nbsp;".__('Refuse')."</button>";
+                     Html::closeForm();
+               } else {
+
+					  $item_i['can_answer'] = 0;
 							echo '<style>
 									.alert {
 									position: relative;
@@ -7415,33 +7434,12 @@ abstract class CommonITILObject extends CommonDBTM {
 									}
 								  </style>';
 							 echo '<div class="alert alert-danger" role="alert">
-												'.get_fullname_user($item_i['users_id_validate']).' => vous avez dépassé le délai<strong> de validation</strong> (48 hours)
+												vous avez dépassé le délai<strong> de validation</strong> (48 hours)
 											</div>';
-					  }
-				 }
+               }
 				 
 		
 			}
-			*/
-			//sophal
-			
-         if (strpos($item['type'], 'Validation') > 0 &&
-            (isset($item_i['can_answer']) && $item_i['can_answer'])) {
-            $form_url = $item['type']::getFormURL();
-            echo "<form id='validationanswers_id_{$item_i['id']}' class='center' action='$form_url' method='post'>";
-            echo Html::hidden('id', ['value' => $item_i['id']]);
-            echo Html::hidden('users_id_validate', ['value' => $item_i['users_id_validate']]);
-            Html::textarea([
-               'name'   => 'comment_validation',
-               'rows'   => 5
-            ]);
-            echo "<button type='submit' class='submit approve' name='approval_action' value='approve'>";
-            echo "<i class='far fa-thumbs-up'></i>&nbsp;&nbsp;".__('Approve')."</button>";
-
-            echo "<button type='submit' class='submit refuse very_small_space' name='approval_action' value='refuse'>";
-            echo "<i class='far fa-thumbs-down'></i>&nbsp;&nbsp;".__('Refuse')."</button>";
-            Html::closeForm();
-         }
          if ($item['type'] == 'Solution' && $item_i['status'] != CommonITILValidation::WAITING && $item_i['status'] != CommonITILValidation::NONE) {
             echo "<div class='users_id_approval' id='users_id_approval_".$item_i['users_id_approval']."'>";
             $user->getFromDB($item_i['users_id_approval']);