diff --git a/src/Payutc/Service/POSS3.php b/src/Payutc/Service/POSS3.php
index 78c19f6..e144a19 100644
--- a/src/Payutc/Service/POSS3.php
+++ b/src/Payutc/Service/POSS3.php
@@ -137,7 +137,9 @@ public function transaction($fun_id, $badge_id, $obj_ids) {
         }
 
         // Création de la transaction, validée immédiatement
-        Transaction::createAndValidate($buyer, $this->user(), $this->application()->getId(), $fun_id, $objects);
+        $tr = Transaction::createAndValidate($buyer, $this->user(),
+                                             $this->application()->getId(),
+                                             $fun_id, $objects);
         
         // Retourner les infos sur l'utilisateur
         $msg = $buyer->getMsgPerso($fun_id);
@@ -145,7 +147,8 @@ public function transaction($fun_id, $badge_id, $obj_ids) {
         return array("firstname"=>$buyer->getFirstname(), 
                      "lastname"=>$buyer->getLastname(), 
                      "solde"=>$buyer->getCredit(),
-                     "msg_perso"=>$msg);
+                     "msg_perso"=>$msg,
+                     "transaction_id"=>$tr->getId());
     }
 
     public function getImage64($img_id, $outw = 0, $outh = 0)
diff --git a/tests/Payutc/Service/Poss3RwdbTest.php b/tests/Payutc/Service/Poss3RwdbTest.php
index fb22ab2..e16a4b5 100644
--- a/tests/Payutc/Service/Poss3RwdbTest.php
+++ b/tests/Payutc/Service/Poss3RwdbTest.php
@@ -49,7 +49,8 @@ public function testTransaction()
             'firstname' => 'Thomas',
             'lastname' => 'Recouvreux',
             'solde' => $solde-280,
-            'msg_perso' => 'http://payutc.github.io'
+            'msg_perso' => 'http://payutc.github.io',
+            'transaction_id' => 14
         );
         $this->assertEquals($o, $r->body);
         $this->assertEquals(200, $r->code);
@@ -108,7 +109,8 @@ public function testTransactionWithQuanityAndReductions()
                    'firstname' => 'Thomas',
                    'lastname' => 'Recouvreux',
                    'solde' => $solde-760,
-                   'msg_perso' => 'http://payutc.github.io'
+                   'msg_perso' => 'http://payutc.github.io',
+                   'transaction_id' => 14
                    );
         $this->assertEquals($o, $r->body);
         $this->assertEquals(200, $r->code);