diff --git a/tests/php-unit-tests/integration-tests/XmlModule.php b/tests/php-unit-tests/integration-tests/XmlModule.php
new file mode 100644
index 000000000..68ba63519
--- /dev/null
+++ b/tests/php-unit-tests/integration-tests/XmlModule.php
@@ -0,0 +1,66 @@
+<?php
+
+namespace Combodo\iTop\Test\UnitTest;
+
+class XmlModule {
+	public string $sModuleName;
+	public array $aDependencyModulesNames=[];
+	public array $aAllDependencyModulesNames=[];
+	public array $aXMlMetaInfosByModuleNames=[];
+
+	public function __construct(string $sModuleName)
+	{
+		$this->sModuleName = $sModuleName;
+	}
+
+	public function AddDependency(string $sXmlMetaInfoUID, string $sDefiningModuleName, array $aModules)
+	{
+		if ($sDefiningModuleName===$this->sModuleName){
+			return;
+		}
+
+		/*$aLog = ['itop-bridge-datacenter-mgmt-services', 'itop-datacenter-mgmt'];
+		if (in_array($sDefiningModuleName, $aLog) && in_array($this->sModuleName, $aLog)){
+			echo $this->sModuleName . " => $sDefiningModuleName === " . $sXmlMetaInfoUID . "\n";
+		}*/
+
+		if (! array_key_exists($sDefiningModuleName, $this->aXMlMetaInfosByModuleNames)){
+			$this->aXMlMetaInfosByModuleNames[$sDefiningModuleName]=[$sXmlMetaInfoUID];
+		} else {
+			if (! in_array($sXmlMetaInfoUID, $this->aXMlMetaInfosByModuleNames[$sDefiningModuleName])){
+				$this->aXMlMetaInfosByModuleNames[$sDefiningModuleName][]=$sXmlMetaInfoUID;
+			}
+		}
+
+		if (! array_key_exists($sDefiningModuleName, $this->aDependencyModulesNames)){
+			/** @var XmlModule $oXmlModule */
+			$oXmlModule = $aModules[$sDefiningModuleName];
+			$this->aDependencyModulesNames[$sDefiningModuleName]=$oXmlModule;
+		}
+	}
+
+	public function Depends(string $sModuleName) : bool
+	{
+		return array_key_exists($sModuleName, $this->aDependencyModulesNames) || array_key_exists($sModuleName, $this->aXMlMetaInfosByModuleNames);
+	}
+
+	public function __toString(): string
+	{
+		return sprintf("%s (%s)", $this->sModuleName, implode('|', array_keys($this->aDependencyModulesNames)));
+	}
+
+	public function CompleteModuleDependencies(array $aAllModules) : void
+	{
+		foreach ($this->aDependencyModulesNames as $sDirectDependency => $oXmlMod){
+			/** @var \Combodo\iTop\Test\UnitTest\XmlModule $oDirectDepXmlModule */
+			$oDirectDepXmlModule = $aAllModules[$sDirectDependency];
+			foreach ($oDirectDepXmlModule->aDependencyModulesNames as $sDirectDependency2 => $oXmlMod2){
+				if (! array_key_exists($sDirectDependency2, $this->aDependencyModulesNames) && ! in_array($sDirectDependency2, $this->aAllDependencyModulesNames)){
+					$this->aAllDependencyModulesNames[]=$sDirectDependency2;
+				}
+			}
+		}
+	}
+
+
+}
\ No newline at end of file
diff --git a/tests/php-unit-tests/integration-tests/XmlModuleMetaInfo.php b/tests/php-unit-tests/integration-tests/XmlModuleMetaInfo.php
new file mode 100644
index 000000000..8955673fd
--- /dev/null
+++ b/tests/php-unit-tests/integration-tests/XmlModuleMetaInfo.php
@@ -0,0 +1,29 @@
+<?php
+
+namespace Combodo\iTop\Test\UnitTest;
+
+class XmlModuleMetaInfo {
+	public string $sLastNodeId;
+	public string $sNodeName;
+	public string $sPath;
+	public string $sDelta;
+
+	public function __construct(string $sLastNodeId, string $sNodeName, string $sPath, string $sDelta)
+	{
+		$this->sLastNodeId = $sLastNodeId;
+		$this->sNodeName = $sNodeName;
+		$this->sPath = $sPath;
+		$this->sDelta = $sDelta;
+	}
+
+	public function IsDefine() : bool {
+		return
+			 $this->sDelta === 'define_if_not_exists'
+			|| $this->sDelta === 'define';
+	}
+
+	public function GetUID() : string
+	{
+		return $this->sNodeName . '_' . $this->sLastNodeId;
+	}
+}
\ No newline at end of file
diff --git a/tests/php-unit-tests/integration-tests/iTopModulesDependencyTest.php b/tests/php-unit-tests/integration-tests/iTopModulesDependencyTest.php
new file mode 100644
index 000000000..b5ca28e0e
--- /dev/null
+++ b/tests/php-unit-tests/integration-tests/iTopModulesDependencyTest.php
@@ -0,0 +1,309 @@
+<?php
+/**
+ * Copyright (C) 2013-2024 Combodo SAS
+ * This file is part of iTop.
+ * iTop is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * iTop is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ * You should have received a copy of the GNU Affero General Public License
+ */
+
+namespace Combodo\iTop\Test\UnitTest\Integration;
+
+use ApplicationException;
+use Combodo\iTop\Test\UnitTest\ItopTestCase;
+use Combodo\iTop\Test\UnitTest\XmlModule;
+use Combodo\iTop\Test\UnitTest\XmlModuleMetaInfo;
+use utils;
+
+require_once __DIR__ . '/XmlModuleMetaInfo.php';
+require_once __DIR__ . '/XmlModule.php';
+
+use ModuleInstallerAPI;
+/**
+ * @package Combodo\iTop\Test\UnitTest\Setup
+ * @group beforeSetup
+ */
+class iTopModulesDependencyTest extends ItopTestCase {
+	/**
+	 * define
+	 * define_if_not_exists
+	 * delete
+	 * force
+	 * if_exists
+	 * must_exist
+	 * redefine
+	 */
+
+	private array $aFilesToRemove = [];
+
+	protected function setUp(): void
+	{
+		parent::setUp(); // TODO: Change the autogenerated stub
+
+		require_once APPROOT."setup/modulediscovery.class.inc.php";
+		require_once(APPROOT.'/setup/moduleinstaller.class.inc.php');
+	}
+
+	protected function tearDown(): void
+	{
+		parent::tearDown(); // TODO: Change the autogenerated stub
+		foreach ($this->aFilesToRemove as $sTmpFile){
+			@unlink($sTmpFile);
+		}
+	}
+
+	private array $aAllDmFiles=[];
+	public function ListDatamodelFiles() : array
+	{
+		if (count($this->aAllDmFiles)==0){
+		    $aGlobPAtterns = [
+			    APPROOT.'datamodels/2.x/*/datamodel.*.xml',
+			    APPROOT.'application/*.xml',
+			    APPROOT.'core/*.xml',
+		    ];
+
+			foreach ($aGlobPAtterns as $sPattern) {
+				$this->aAllDmFiles = array_merge($this->aAllDmFiles, glob($sPattern));
+			}
+		}
+		return $this->aAllDmFiles;
+	}
+
+	private array $aModules=[];
+
+	public function FetchAllDependenciesViaDM()
+	{
+		foreach ($this->ListDatamodelFiles() as $sFile) {
+			$this->FetchXmlMetaInfo($sFile);
+		}
+
+		foreach ($this->aDefineNodes as $sKey => $aModules){
+			foreach ($aModules as $sModuleName){
+				if (! array_key_exists($sModuleName, $this->aModules)){
+					$this->aModules[$sModuleName] = new XmlModule($sModuleName);
+				}
+			}
+		}
+
+		foreach ($this->aDependencyNodes as $sKey => $aModules){
+			foreach ($aModules as $sModuleName){
+				/** @var XmlModule $oCurrentXmlModule */
+				$oCurrentXmlModule = $this->aModules[$sModuleName] ?? null;
+				if (is_null($oCurrentXmlModule)){
+					$oCurrentXmlModule = new XmlModule($sModuleName);
+					$this->aModules[$sModuleName] = $oCurrentXmlModule;
+				}
+
+				$aDefiningModules = $this->aDefineNodes[$sKey] ?? null;
+				if (is_null($aDefiningModules)){
+					//throw new \Exception("weard behaviour $sKey");
+					continue;
+				}
+
+				foreach ($aDefiningModules as $sDefiningModuleName){
+					$oCurrentXmlModule->AddDependency($sKey, $sDefiningModuleName, $this->aModules);
+				}
+			}
+		}
+
+		$this->OrderModules();
+		$this->CompleteModuleDependencies();
+	}
+
+	private array $aModulesDepsByModuleName=[];
+	public function testModules()
+	{
+		$this->FetchAllDependenciesViaDM();
+
+		$aDirsToScan = [
+			APPROOT.'datamodels/2.x',
+			APPROOT.'extensions',
+			APPROOT.'data/production-modules',
+		];
+
+		foreach(\ModuleDiscovery::GetAvailableModules($aDirsToScan) as $sModuleId => $aData) {
+			list($sModuleName, $sVersion) = \ModuleDiscovery::GetModuleName($sModuleId);
+			$aCurrentDeps = $aData['dependencies'] ?? [];
+			$this->aModulesDepsByModuleName[$sModuleName] = $aCurrentDeps;
+		}
+
+		$aErrors=[];
+		/** @var XmlModule $oXmlModule */
+		foreach ($this->aModules as $sModuleName => $oXmlModule) {
+			$aCurrentDeps = $this->aModulesDepsByModuleName[$sModuleName] ?? [];
+			$aModuleErrors=[];
+			foreach ($oXmlModule->aDependencyModulesNames as $sDepModuleName => $oXmlModule2){
+				if ($sDepModuleName==="core"||$sDepModuleName==="application"){
+					continue;
+				}
+
+				$sXmlUIDs = implode('|', $oXmlModule->aXMlMetaInfosByModuleNames[$sDepModuleName]);
+				foreach ($aCurrentDeps as $sDepString){
+					$oModuleDependency = new \ModuleDependency($sDepString);
+					if (! in_array($sDepModuleName, $oModuleDependency->GetPotentialPrerequisiteModuleNames())){
+						$bResolved=false;
+						foreach ($oModuleDependency->GetPotentialPrerequisiteModuleNames() as $sPotentialDepModuleName){
+							/** @var XmlModule $oXmlModule2 */
+							$oXmlModule2 = $this->aModules[$sPotentialDepModuleName]??null;
+
+							if (! is_null($oXmlModule2) && $oXmlModule2->Depends($sDepModuleName)){
+								$bResolved=true;
+							}
+						}
+						if (! $bResolved){
+							$aModuleErrors []= "$sModuleName depends on $sDepModuleName but missing in module dependencies: " . implode('|', $aCurrentDeps) . ". ($sXmlUIDs)";
+						}
+					}
+				}
+			}
+
+			if (count($aModuleErrors)){
+				$aErrors[$sModuleName]=$aModuleErrors;
+			}
+		}
+
+		$this->assertEquals(0, count($aErrors), var_export($aErrors, true));
+
+	}
+
+	public function testGetMetaInfo()
+	{
+		$this->FetchXmlMetaInfo(APPROOT . 'core/datamodel.core.xml');
+
+		$this->assertEquals("core", $this->sCurrentModule);
+		$this->assertEquals(22, count($this->aDefineNodes));
+		$this->assertEquals(0, count($this->aDependencyNodes));
+		//var_dump($this->aDefineNodes);
+		$this->assertEquals([], $this->aDefineNodes);
+		$this->assertEquals([], $this->aDependencyNodes);
+	}
+
+	private string $sCurrentModule;
+	private array $aDefineNodes;
+	private array $aDependencyNodes;
+
+	private function GetModuleSuffix($sFile) : string
+	{
+		if (! preg_match('|.*datamodel\.([^\.]+)\.xml|', $sFile, $aMatches)){
+			throw new \Exception("Regexp issue: $sFile");
+		}
+		return $aMatches[1];
+	}
+
+	public function FetchXmlMetaInfo($sFile) : void {
+		$oDomDoc = new \DOMDocument('1.0', 'UTF-8');
+		libxml_clear_errors();
+		$oDomDoc->loadXml(file_get_contents($sFile));
+		$aErrors = libxml_get_errors();
+		if (count($aErrors) > 0)
+		{
+			throw new \Exception("Malformed XML");
+		}
+
+		$this->sCurrentModule = $this->GetModuleSuffix($sFile);
+
+		if (! isset($this->aDefineNodes)){
+			$this->aDefineNodes=[];
+		}
+
+		if (! isset($this->aDependencyNodes)){
+			$this->aDependencyNodes=[];
+		}
+
+		foreach ($oDomDoc->childNodes as $oDomNode){
+			$this->FetchMetaInfo($oDomDoc->childNodes);
+		}
+	}
+
+	private function FetchMetaInfo(\DOMNodeList $oDomNodeList, ?string $sPath=null)
+	{
+		/** @var \DOMNode $oDomNode */
+		foreach ($oDomNodeList as $oDomNode) {
+			/** @var \DOMAttr $oDelta */
+			$oDelta = $oDomNode->attributes['_delta'] ?? null;
+			/** @var \DOMAttr $oId */
+			$oId = $oDomNode->attributes['id'] ?? null;
+
+			if (!is_null($oDelta) && ! is_null($oId)) {
+				$sId = $oId->nodeValue;
+				$sPath = $sPath ? $sPath . "->" . $sId : $sId;
+				$oXmlModuleMetaInfo = new XmlModuleMetaInfo($sId, $oDomNode->nodeName, $sPath, $oDelta->nodeValue);
+				$sKey = $oXmlModuleMetaInfo->GetUID();
+				if ($oXmlModuleMetaInfo->IsDefine()){
+					if (array_key_exists($sKey, $this->aDefineNodes)){
+						$this->aDefineNodes[$sKey][]=$this->sCurrentModule;
+					} else {
+						$this->aDefineNodes[$sKey]=[ $this->sCurrentModule ];
+					}
+				} else {
+					if (array_key_exists($sKey, $this->aDependencyNodes)){
+						$this->aDependencyNodes[$sKey][]=$this->sCurrentModule;
+					} else {
+						$this->aDependencyNodes[$sKey]=[ $this->sCurrentModule ];
+					}
+				}
+			}
+
+			$this->FetchMetaInfo($oDomNode->childNodes, $sPath);
+		}
+	}
+
+	private function OrderModules()
+	{
+		$aModuleDepsCount = [];
+		/** @var XmlModule $oXmlModule */
+		foreach ($this->aModules as $oXmlModule) {
+			$aModuleDepsCount[$oXmlModule->sModuleName] = count($oXmlModule->aDependencyModulesNames);
+		}
+
+		$aOrderModules=[];
+		while (count($aModuleDepsCount)>0) {
+			asort($aModuleDepsCount);
+
+			foreach ($aModuleDepsCount as $sModuleName => $iCount){
+				if ($iCount>0){
+					/** @var XmlModule $oXmlModule */
+					$oXmlModule = $this->aModules[$sModuleName];
+					/*var_dump((string)$oXmlModule);
+					var_dump((string)$this->aModules['itop-datacenter-mgmt']);
+					var_dump((string)$this->aModules['itop-config-mgmt']);
+					var_dump($aModuleDepsCount);*/
+					//var_dump($this->aModules['itop-bridge-cmdb-services']->aXMlMetaInfosByModuleNames["itop-bridge-cmdb-ticket"]);
+					//var_dump($this->aModules['itop-bridge-cmdb-ticket']->aXMlMetaInfosByModuleNames["itop-bridge-cmdb-services"]);
+					throw new \Exception("still deps with $sModuleName");
+				}
+
+				unset($aModuleDepsCount[$sModuleName]);
+				$aOrderModules[$sModuleName] = $this->aModules[$sModuleName];
+				break;
+			}
+
+			//echo "$sModuleName\n";
+			foreach ($aModuleDepsCount as $sStillToProcessModuleName => $c){
+				/** @var XmlModule $oXmlStillToProcessModule */
+				$oXmlStillToProcessModule = $this->aModules[$sStillToProcessModuleName];
+				if ($oXmlStillToProcessModule->Depends($sModuleName)){
+					$aModuleDepsCount[$sStillToProcessModuleName] = $c - 1 ;
+				}
+			}
+		}
+
+		$this->aModules = $aOrderModules;
+	}
+
+	private function CompleteModuleDependencies()
+	{
+		/** @var XmlModule $oXmlModule */
+		foreach ($this->aModules as $oXmlModule) {
+			$oXmlModule->CompleteModuleDependencies($this->aModules);
+		}
+	}
+}
+
+