diff --git a/build/api/module/Excel.php b/build/api/module/Excel.php
index 3c011f0..8a66436 100644
--- a/build/api/module/Excel.php
+++ b/build/api/module/Excel.php
@@ -22,6 +22,7 @@ class Excel
 
 	public function post($args){
 		if(isset($_FILES["file"]["tmp_name"])){
+			//put everything in a try so we catch all PhpExcel exceptions and return a clean API Response
 			try{
 				$reader = new \PhpOffice\PhpSpreadsheet\Reader\Xls();
 				$reader->setReadDataOnly(true);
@@ -42,6 +43,8 @@ class Excel
 				$UE = [];
 				//array containing all the UEs
 				$allUE = [];
+				//array containing all the formations
+				$allFormations = [];
 
 				/*
 				 * declare the lambda that will add finalized UE to the array
@@ -65,7 +68,7 @@ class Excel
 				/*
 				 * declaring the lambda tha twill extract the list of formation involved in the group
 				 */
-				$getFormations = function(?string $group) use (&$formation) : array{
+				$getFormations = function(?string $group) use (&$formation,&$allFormations) : array{
 					if(!$group) return [$formation];
 
 					//replace the generic "INFO" keyword by the actual formation
@@ -78,7 +81,18 @@ class Excel
 					$groups = array_map('trim', $groups);
 
 					//delete empty strings
-					return array_filter($groups);
+					$groups = array_filter($groups);
+
+					foreach ($groups as $group){
+						if(!isset($allFormations[$group])){
+							$allFormations[$group] = [
+								"name" => $group,
+								"internal" => strpos(strtolower($group),"info") !== false ? true : false
+							];
+						}
+					}
+
+					return $groups;
 				};
 
 				/*
@@ -146,8 +160,8 @@ class Excel
 					if ($UESpreadsheet->getCellByColumnAndRow(5,$row->getRowIndex())->getCalculatedValue()){
 						$UE["groups"]["Course"][] = [
 							"VH" => $UESpreadsheet->getCellByColumnAndRow(5,$row->getRowIndex())->getCalculatedValue(),
-							"internalStudentPart" => $getInternalStudentPart($UESpreadsheet->getCellByColumnAndRow(6,$row->getRowIndex())->getValue()),
-							"formations" => $getFormations($UESpreadsheet->getCellByColumnAndRow(6,$row->getRowIndex())->getValue()),
+							"internalStudentPart" => $getInternalStudentPart($UESpreadsheet->getCellByColumnAndRow(6,$row->getRowIndex())->getCalculatedValue()),
+							"formations" => $getFormations($UESpreadsheet->getCellByColumnAndRow(6,$row->getRowIndex())->getCalculatedValue()),
 							"professor" => $UESpreadsheet->getCellByColumnAndRow(7,$row->getRowIndex())->getValue() ?: null
 						];
 					}
@@ -156,8 +170,8 @@ class Excel
 					if($UESpreadsheet->getCellByColumnAndRow(8,$row->getRowIndex())->getCalculatedValue()){
 						$UE["groups"]["TD"][] = [
 							"VH" => $UESpreadsheet->getCellByColumnAndRow(8,$row->getRowIndex())->getCalculatedValue(),
-							"internalStudentPart" => $getInternalStudentPart($UESpreadsheet->getCellByColumnAndRow(9,$row->getRowIndex())->getValue()),
-							"formations" => $getFormations($UESpreadsheet->getCellByColumnAndRow(6,$row->getRowIndex())->getValue()),
+							"internalStudentPart" => $getInternalStudentPart($UESpreadsheet->getCellByColumnAndRow(9,$row->getRowIndex())->getCalculatedValue()),
+							"formations" => $getFormations($UESpreadsheet->getCellByColumnAndRow(6,$row->getRowIndex())->getCalculatedValue()),
 							"professor" => $UESpreadsheet->getCellByColumnAndRow(10,$row->getRowIndex())->getValue() ?: null
 						];
 					}
@@ -166,8 +180,8 @@ class Excel
 					if($UESpreadsheet->getCellByColumnAndRow(11,$row->getRowIndex())->getCalculatedValue()){
 						$UE["groups"]["TP"][] = [
 							"VH" => $UESpreadsheet->getCellByColumnAndRow(11,$row->getRowIndex())->getCalculatedValue(),
-							"internalStudentPart" => $getInternalStudentPart($UESpreadsheet->getCellByColumnAndRow(12,$row->getRowIndex())->getValue()),
-							"formations" => $getFormations($UESpreadsheet->getCellByColumnAndRow(6,$row->getRowIndex())->getValue()),
+							"internalStudentPart" => $getInternalStudentPart($UESpreadsheet->getCellByColumnAndRow(12,$row->getRowIndex())->getCalculatedValue()),
+							"formations" => $getFormations($UESpreadsheet->getCellByColumnAndRow(6,$row->getRowIndex())->getCalculatedValue()),
 							"professor" => $UESpreadsheet->getCellByColumnAndRow(13,$row->getRowIndex())->getValue() ?: null
 						];
 					}
@@ -222,7 +236,7 @@ class Excel
 
 
 
-				return [ 'data' => ["professors" => $allProf, "UEs" => $allUE ] ];
+				return [ 'data' => ["professors" => $allProf, "formations" => $allFormations, "UEs" => $allUE ] ];
 			}catch (Exception $e){
 				return [ 'error' => new Error(Err::UnknownError) ];
 			}