diff --git a/conf/params.distrib.xml b/conf/params.distrib.xml
index 0992f35..91af932 100644
--- a/conf/params.distrib.xml
+++ b/conf/params.distrib.xml
@@ -6,6 +6,7 @@
   <itop_password>admin</itop_password>
   <itop_token/>
   <itop_login_mode/>
+  <itop_env>production</itop_env>
 
   <!-- console_log_level: level of logging to console (std output)
   -1 : none, nothing will be logged to the console
diff --git a/core/collector.class.inc.php b/core/collector.class.inc.php
index 3b6f671..1c7b89b 100644
--- a/core/collector.class.inc.php
+++ b/core/collector.class.inc.php
@@ -712,7 +712,8 @@ public function Synchronize($iMaxChunkSize = 0)
 			);
 
 			$sLoginform = Utils::GetLoginMode();
-			$sResult = self::CallItopViaHttp("/synchro/synchro_import.php?login_mode=$sLoginform",
+			$sEnv = Utils::GetSwitchEnv();
+			$sResult = self::CallItopViaHttp("/synchro/synchro_import.php?login_mode=$sLoginform&switch_env=$sEnv",
 				$aData);
 
 			$sTrimmedOutput = trim(strip_tags($sResult));
@@ -739,7 +740,8 @@ public function Synchronize($iMaxChunkSize = 0)
 		}
 
 		$sLoginform = Utils::GetLoginMode();
-		$sResult = self::CallItopViaHttp("/synchro/synchro_exec.php?login_mode=$sLoginform",
+		$sEnv = Utils::GetSwitchEnv();
+		$sResult = self::CallItopViaHttp("/synchro/synchro_exec.php?login_mode=$sLoginform&switch_env=$sEnv",
 			$aData);
 
 		$iErrorsCount = $this->ParseSynchroExecOutput($sResult);
diff --git a/core/restclient.class.inc.php b/core/restclient.class.inc.php
index e54cbf8..8488b8e 100644
--- a/core/restclient.class.inc.php
+++ b/core/restclient.class.inc.php
@@ -114,10 +114,12 @@ protected static function ExecOperation($aOperation, $sVersion = '1.0')
 		$aData = Utils::GetCredentials();
 		$aData['json_data'] = json_encode($aOperation);
 		$sLoginform = Utils::GetLoginMode();
-		$sUrl = sprintf('%s/webservices/rest.php?login_mode=%s&version=%s',
+		$sEnv = Utils::GetSwitchEnv();
+		$sUrl = sprintf('%s/webservices/rest.php?login_mode=%s&version=%s&switch_env=%s',
 			Utils::GetConfigurationValue('itop_url', ''),
 			$sLoginform,
-			$sVersion
+			$sVersion,
+			$sEnv
 		);
 		$aHeaders = array();
 		$aCurlOptions = Utils::GetCurlOptions();
diff --git a/core/utils.class.inc.php b/core/utils.class.inc.php
index 20c88f0..1367546 100644
--- a/core/utils.class.inc.php
+++ b/core/utils.class.inc.php
@@ -336,6 +336,18 @@ static public function GetLoginMode() : string {
 		return 'form';
 	}
 
+
+	/**
+	 * Returns the iTop environment to use when connecting to the iTop API.
+	 *
+	 * @return string
+	 */
+	static public function GetSwitchEnv() : string {
+
+		return Utils::GetConfigurationValue('itop_env', 'production');
+
+	}
+
 	/**
 	 * Dump information about the configuration (value of the parameters)
 	 *
diff --git a/test/utils/params.test.xml b/test/utils/params.test.xml
index f45e915..a666ca5 100644
--- a/test/utils/params.test.xml
+++ b/test/utils/params.test.xml
@@ -5,6 +5,7 @@
   <itop_password>admin</itop_password>
   <itop_token></itop_token>
   <itop_login_mode></itop_login_mode>
+  <itop_env>production</itop_env>
   <console_log_level>6</console_log_level>
   <eventissue_log_level>-1</eventissue_log_level>
   <console_log_dateformat>[Y-m-d H:i:s]</console_log_dateformat>