diff --git a/htdocs/commande/card.php b/htdocs/commande/card.php
index b58a74ae67a..b0c257172a4 100644
--- a/htdocs/commande/card.php
+++ b/htdocs/commande/card.php
@@ -2991,7 +2991,7 @@ if ($action == 'create' && $usercancreate) {
 		// Presend form
 		$modelmail = 'order_send';
 		$defaulttopic = 'SendOrderRef';
-		$diroutput = $conf->commande->multidir_output[$object->entity];
+		$diroutput = getMultidirOutput($object);
 		$trackid = 'ord'.$object->id;
 
 		include DOL_DOCUMENT_ROOT.'/core/tpl/card_presend.tpl.php';
diff --git a/htdocs/commande/class/commande.class.php b/htdocs/commande/class/commande.class.php
index 026d931a89a..2b11588b854 100644
--- a/htdocs/commande/class/commande.class.php
+++ b/htdocs/commande/class/commande.class.php
@@ -3978,6 +3978,7 @@ class Commande extends CommonOrder
 		$this->id = 0;
 		$this->ref = 'SPECIMEN';
 		$this->specimen = 1;
+		$this->entity = $conf->entity;
 		$this->socid = 1;
 		$this->date = time();
 		$this->date_lim_reglement = $this->date + 3600 * 24 * 30;
diff --git a/htdocs/core/lib/functions.lib.php b/htdocs/core/lib/functions.lib.php
index 36470668f43..69b437ab650 100644
--- a/htdocs/core/lib/functions.lib.php
+++ b/htdocs/core/lib/functions.lib.php
@@ -71,6 +71,27 @@ if (!function_exists('utf8_decode')) {
 	}
 }
 
+/**
+ * Return the full path of the directory where a module (or an object of a module) stores its files. Path may depends on the entity if a multicompany module is enabled.
+ *
+ * @param CommonObject 	$object 	Dolibarr common object
+ * @param string 		$module 	Override object element, for example to use 'mycompany' instead of 'societe'
+ * @return string|void				The path of the relative directory of the module
+ * @since Dolibarr V18
+ */
+function getMultidirOutput($object, $module = '')
+{
+	global $conf;
+	if (!is_object($object)) {
+		return null;
+	}
+	if (empty($module) && !empty($object->element)) {
+		$module = $object->element;
+	} else {
+		return null;
+	}
+	return $conf->$module->multidir_output[$object->entity];
+}
 
 /**
  * Return dolibarr global constant string value
diff --git a/htdocs/core/modules/commande/doc/pdf_eratosthene.modules.php b/htdocs/core/modules/commande/doc/pdf_eratosthene.modules.php
index 78b3fa24a33..cb460cff14a 100644
--- a/htdocs/core/modules/commande/doc/pdf_eratosthene.modules.php
+++ b/htdocs/core/modules/commande/doc/pdf_eratosthene.modules.php
@@ -296,18 +296,18 @@ class pdf_eratosthene extends ModelePDFCommandes
 
 
 
-		if ($conf->commande->multidir_output[$conf->entity]) {
+		if (getMultidirOutput($object)) {
 			$object->fetch_thirdparty();
 
 			$deja_regle = 0;
 
 			// Definition of $dir and $file
 			if ($object->specimen) {
-				$dir = $conf->commande->multidir_output[$conf->entity];
+				$dir = getMultidirOutput($object);
 				$file = $dir."/SPECIMEN.pdf";
 			} else {
 				$objectref = dol_sanitizeFileName($object->ref);
-				$dir = $conf->commande->multidir_output[$object->entity]."/".$objectref;
+				$dir = getMultidirOutput($object)."/".$objectref;
 				$file = $dir."/".$objectref.".pdf";
 			}
 
@@ -1447,7 +1447,7 @@ class pdf_eratosthene extends ModelePDFCommandes
 	protected function _pagehead(&$pdf, $object, $showaddress, $outputlangs, $outputlangsbis = null, $titlekey = "PdfOrderTitle")
 	{
 		// phpcs:enable
-		global $conf, $langs, $hookmanager;
+		global $conf, $langs, $hookmanager, $mysoc;
 
 		$ltrdirection = 'L';
 		if ($outputlangs->trans("DIRECTION") == 'rtl') $ltrdirection = 'R';
@@ -1473,8 +1473,8 @@ class pdf_eratosthene extends ModelePDFCommandes
 		if (!getDolGlobalInt('PDF_DISABLE_MYCOMPANY_LOGO')) {
 			if ($this->emetteur->logo) {
 				$logodir = $conf->mycompany->dir_output;
-				if (!empty($conf->mycompany->multidir_output[$object->entity])) {
-					$logodir = $conf->mycompany->multidir_output[$object->entity];
+				if (!empty(getMultidirOutput($mysoc, 'mycompany'))) {
+					$logodir = getMultidirOutput($mysoc, 'mycompany');
 				}
 				if (!getDolGlobalInt('MAIN_PDF_USE_LARGE_LOGO')) {
 					$logo = $logodir.'/logos/thumbs/'.$this->emetteur->logo_small;
diff --git a/htdocs/societe/class/societe.class.php b/htdocs/societe/class/societe.class.php
index 1912bd74521..a56fad2c086 100644
--- a/htdocs/societe/class/societe.class.php
+++ b/htdocs/societe/class/societe.class.php
@@ -4358,7 +4358,9 @@ class Societe extends CommonObject
 		global $langs;
 
 		$this->id = 0;
+		$this->entity = $conf->entity;
 		$this->name = getDolGlobalString('MAIN_INFO_SOCIETE_NOM');
+		$this->nom = $this->name; // deprecated
 		$this->address = getDolGlobalString('MAIN_INFO_SOCIETE_ADDRESS');
 		$this->zip = getDolGlobalString('MAIN_INFO_SOCIETE_ZIP');
 		$this->town = getDolGlobalString('MAIN_INFO_SOCIETE_TOWN');
@@ -4368,8 +4370,6 @@ class Societe extends CommonObject
 
 		$this->note_private = getDolGlobalString('MAIN_INFO_SOCIETE_NOTE');
 
-		$this->nom = $this->name; // deprecated
-
 		// We define country_id, country_code and country
 		$country_id = $country_code = $country_label = '';
 		if (!empty($conf->global->MAIN_INFO_SOCIETE_COUNTRY)) {