diff --git a/test/postbuild_integration/iTopDesignFormatChecklistTest.php b/test/postbuild_integration/iTopDesignFormatChecklistTest.php
index 7baf7a8d8..fed640d0a 100644
--- a/test/postbuild_integration/iTopDesignFormatChecklistTest.php
+++ b/test/postbuild_integration/iTopDesignFormatChecklistTest.php
@@ -4,6 +4,7 @@ namespace Combodo\iTop\Test\UnitTest\ReleaseChecklist;
 
 use Combodo\iTop\Test\UnitTest\ItopTestCase;
 use iTopDesignFormat;
+use PHPUnit\Exception;
 
 
 /**
@@ -50,33 +51,61 @@ class TestForITopDesignFormatClass extends ItopTestCase
 
 		//make sure there is only one found
 		$this->assertTrue(is_array($aDatamodelCurrentVersions));
-		$this->assertEquals(1, count($aDatamodelCurrentVersions), "Found too much XML versions: " . json_encode($aDatamodelCurrentVersions));
 
-		//check we have migration function from new version to previous one
-		$sCurrentVersion = array_values($aDatamodelCurrentVersions)[0];
-		$this->assertTrue(array_key_exists($sCurrentVersion, iTopDesignFormat::$aVersions), "Missing $sCurrentVersion conversion functions in iTopDesignFormat.");
-		$aCurrentVersionInfo = iTopDesignFormat::$aVersions[$sCurrentVersion];
-		$this->assertTrue(is_array($aCurrentVersionInfo), "Wrong $sCurrentVersion config in iTopDesignFormat.");
-		$this->assertTrue(array_key_exists('previous', $aCurrentVersionInfo), "Missing previous for $sCurrentVersion config in iTopDesignFormat.");
-		$this->TestDefinedFunction($aCurrentVersionInfo, 'go_to_previous', $sCurrentVersion);
+		$aErrors = [];
 
-		//check we have migration function from N-1 version to new one
-		$sPreviousVersion = $aCurrentVersionInfo['previous'];
-		$this->assertTrue(array_key_exists($sPreviousVersion, iTopDesignFormat::$aVersions), "Missing $sPreviousVersion config in iTopDesignFormat.");
-		$aPreviousVersionInfo = iTopDesignFormat::$aVersions[$sPreviousVersion];
-		$this->assertTrue(is_array($aPreviousVersionInfo), "wrong $sPreviousVersion config in iTopDesignFormat.");
-		$this->assertTrue(array_key_exists('previous', $aPreviousVersionInfo), "Missing previous for $sPreviousVersion config in iTopDesignFormat.");
-		$this->TestDefinedFunction($aPreviousVersionInfo, 'go_to_previous', $sPreviousVersion);
-		$this->TestDefinedFunction($aPreviousVersionInfo, 'go_to_next', $sPreviousVersion);
+		foreach ($aDatamodelCurrentVersions as $sCurrentVersion)
+		{
+			try{
+				//check we have migration function from current version to previous
+				$this->CheckCondition(array_key_exists($sCurrentVersion, iTopDesignFormat::$aVersions), "Missing $sCurrentVersion conversion functions in iTopDesignFormat.");
+				$aCurrentVersionInfo = iTopDesignFormat::$aVersions[$sCurrentVersion];
+				$this->CheckCondition(is_array($aCurrentVersionInfo), "Wrong $sCurrentVersion config in iTopDesignFormat.");
+				$this->CheckCondition(array_key_exists('previous', $aCurrentVersionInfo), "Missing previous for $sCurrentVersion config in iTopDesignFormat.");
+				$this->TestDefinedFunction($aCurrentVersionInfo, 'go_to_previous', $sCurrentVersion);
+
+				//check we have migration function from N-1 version to current one
+				$sPreviousVersion = $aCurrentVersionInfo['previous'];
+				$this->CheckCondition(array_key_exists($sPreviousVersion, iTopDesignFormat::$aVersions), "Missing $sPreviousVersion config in iTopDesignFormat.");
+				$aPreviousVersionInfo = iTopDesignFormat::$aVersions[$sPreviousVersion];
+				$this->CheckCondition(is_array($aPreviousVersionInfo), "wrong $sPreviousVersion config in iTopDesignFormat.");
+				$this->CheckCondition(array_key_exists('previous', $aPreviousVersionInfo), "Missing previous for $sPreviousVersion config in iTopDesignFormat.");
+				$this->TestDefinedFunction($aPreviousVersionInfo, 'go_to_previous', $sPreviousVersion);
+				$this->TestDefinedFunction($aPreviousVersionInfo, 'go_to_next', $sPreviousVersion);
+			}
+			catch(Exception $e)
+			{
+				$aErrors[] = $e->getMessage();
+			}
+		}
+
+		if (count($aErrors)!=0)
+		{
+			$sMsg = "Issue with conversion functions:\n";
+			$sMsg .= implode("\n", $aErrors);
+			$this->fail($sMsg);
+		}
+		else
+		{
+			$this->assertTrue(true);
+		}
+	}
+
+	private function CheckCondition($bCondition, $sMsg)
+	{
+		if ($bCondition === false)
+		{
+			throw new \Exception($sMsg);
+		}
 	}
 
 	private function TestDefinedFunction($aCurrentVersionInfo, $sFunctionKey, $sVersion)
 	{
 		$sInfo = json_encode($aCurrentVersionInfo, true);
-		$this->assertTrue(array_key_exists($sFunctionKey, $aCurrentVersionInfo), "Missing $sFunctionKey in $sVersion config in iTopDesignFormat: " . $sInfo);
+		$this->CheckCondition(array_key_exists($sFunctionKey, $aCurrentVersionInfo), "Missing $sFunctionKey in $sVersion config in iTopDesignFormat: " . $sInfo);
 		echo $aCurrentVersionInfo[$sFunctionKey].'\n';
 		$oReflectionClass = new \ReflectionClass(iTopDesignFormat::class);
-		$this->assertTrue($oReflectionClass->hasMethod($aCurrentVersionInfo[$sFunctionKey]), "wrong go_to_previous function '".$aCurrentVersionInfo[$sFunctionKey]."'' for $sVersion config in iTopDesignFormat." . $sInfo);
+		$this->CheckCondition($oReflectionClass->hasMethod($aCurrentVersionInfo[$sFunctionKey]), "wrong go_to_previous function '".$aCurrentVersionInfo[$sFunctionKey]."'' for $sVersion config in iTopDesignFormat." . $sInfo);
 	}
 
 	public function GetDataModelFiles($sFolder)